Knowledge (XXG)

Linear trend estimation

Source 📝

84: 4335: 1485: 4321: 43: 4359: 4347: 1390:
have written on stationarity, unit root testing, co-integration, and related issues (a summary of some of the works in this area can be found in an information paper by the Royal Swedish Academy of Sciences (2003)); and Ho-Trieu & Tucker (1990) have written on logarithmic time trends with results indicating linear time trends are special cases of
1650: = 0.00006. Incidentally, it could be reasonably argued that as age is a natural continuously variable index, it should not be categorized into decades, and an effect of age and serum trypsin is sought by correlation (assuming the raw data is available). A further example is of a substance measured at four time points in different groups: 201: 146: 1389:
Research results by mathematicians, statisticians, econometricians, and economists have been published in response to those questions. For example, detailed notes on the meaning of linear time trends in the regression model are given in Cameron (2005); Granger, Engle, and many other econometricians
1385:
The estimated coefficient associated with a linear trend variable such as time is interpreted as a measure of the impact of a number of unknown or known but immeasurable factors on the dependent variable over one unit of time. Strictly speaking, this interpretation is applicable for the estimation
1598:
studies often seek to determine a link between sets of data, such as of a clinical or scientific metric in three different diseases. But data may also be linked in time (such as change in the effect of a drug from baseline, to month 1, to month 2), or by an external factor that may or may not be
1545:
to the independent variable (such as cyclic influences), the use of least-squares estimation of the trend is not valid. Also, where the variations are significantly larger than the resulting straight line trend, the choice of start and end points can significantly change the result. That is, the
1540:
with a normal distribution. Real data (for example, climate data) may not fulfill these criteria. This is important, as it makes an enormous difference to the ease with which the statistics can be analyzed so as to extract maximum information from the data series. If there are other non-linear
1611:
on the degree of pain, or increasing doses of different strengths of a drug on a measurable index, i.e. a dose - response effect) to change in direct order as the effect develops. Suppose the mean level of cholesterol before and after the prescription of a statin falls from 5.6
1625:, depending on the nature of the data. Nevertheless, because the groups are ordered, a standard ANOVA is inappropriate. Should the cholesterol fall from 5.4 to 4.1 to 3.7, there is a clear linear trend. The same principle may be applied to the effects of allele/ 1636:
The mathematics of linear trend estimation is a variant of the standard ANOVA, giving different information, and would be the most appropriate test if the researchers hypothesize a trend effect in their test statistic. One example is levels of serum
1472:°C (by coincidence, about the same value as the interannual variation). Hence, the trend is statistically different from 0. However, as noted elsewhere, this time series doesn't conform to the assumptions necessary for least-squares to be valid. 1641:
in six groups of subjects ordered by age decade (10–19 years up to 60–69 years). Levels of trypsin (ng/mL) rise in a direct linear trend of 128, 152, 194, 207, 215, 218 (data from Altman). Unsurprisingly, a 'standard' ANOVA gives
1722: = 0.012. However, should the data have been collected at four time points in the same individuals, linear trend estimation would be inappropriate, and a two-way (repeated measures) ANOVA would have been applied. 1550:. Statistical inferences (tests for the presence of a trend, confidence intervals for the trend, etc.) are invalid unless departures from the standard assumptions are properly accounted for, for example, as follows: 1620:
would most likely find a significant fall at one and two months, but the fall is not linear. Furthermore, a post-hoc test may be required. An alternative test may be a repeated measures (two way) ANOVA or
1027:, meaning that those data points are effectively less certain), then this can be taken into account during the least-squares fitting by weighting each point by the inverse of the variance of that point. 1374:
The use of a linear trend line has been the subject of criticism, leading to a search for alternative approaches to avoid its use in model estimation. One of the alternative approaches involves
1492:. Black = unfiltered data; red = data averaged every 10 points; blue = data averaged every 100 points. All have the same trend, but more filtering leads to higher 1599:
determined by the researcher and/or their subject (such as no pain, mild pain, moderate pain, or severe pain). In these cases, one would expect the effect test statistic (e.g., influence of a
1174: 757: 1537: 637: 853: 553: 963:. The least-squares method assumes the errors are independently distributed with a normal distribution. If this is not the case, hypothesis tests about the unknown parameters 1838: 1247: 219: 1109: 1365: 1077: 786: 695: 666: 453: 424: 957: 287:
gathered tends to increase or decrease over time or is influenced by changes in an external factor. Linear trend estimation essentially creates a straight line on a
1305: 1278: 1204: 584: 395: 1371:, then the estimated trend is deemed significantly different from zero at that significance level, and the null hypothesis of a zero underlying trend is rejected. 4385: 3456: 3961: 1332: 1048: 1021: 1001: 981: 916: 896: 876: 368: 348: 4111: 3735: 1402:
It is harder to see a trend in a noisy time series. For example, if the true series is 0, 1, 2, 3, all plus some independent normally distributed "noise"
2376: 1457: 3509: 56: 3948: 1386:
time frame only. Outside of this time frame, it cannot be determined how these immeasurable factors behave both qualitatively and quantitatively.
1578:: taking first (or occasionally second) differences of the data, with the level of differencing being identified through various unit root tests. 319:
with the dependent variable (typically the measured data) on the vertical axis and the independent variable (often time) on the horizontal axis.
1512:
to the variance of the dependent variable. It says what fraction of the variance of the data is explained by the fitted trend line. It does
2371: 2071: 164: 156: 105: 639:, the difference at each data point is squared, and then added together, giving the "sum of squares" measurement of error. The values of 2975: 2123: 1555: 4363: 3758: 3650: 255: 237: 182: 127: 70: 4390: 3936: 3810: 1979:
Kungl. Vetenskapsakademien (2003). "Time-series econometrics: Cointegration and autoregressive conditional heteroskedasticity".
3994: 3655: 3400: 2771: 2361: 2040: 1751: 1547: 2985: 4045: 3257: 3064: 2953: 2911: 1927: 1630: 2150: 4288: 3247: 1842: 3297: 3839: 3788: 3773: 3763: 3632: 3504: 3471: 3252: 3082: 1501: 62: 3908: 3209: 1117: 700: 4183: 3984: 2963: 2632: 2096: 4068: 4035: 98: 92: 4040: 3783: 3542: 3448: 3428: 3336: 3047: 2865: 2348: 2220: 1453: 3214: 2980: 2838: 4395: 3800: 3568: 3289: 3143: 3072: 2992: 2850: 2831: 2539: 2260: 1897: 1536:
Thus far, the data have been assumed to consist of the trend plus noise, with the noise at each data point being
3913: 1786: 1338:, the distribution of calculated trends is to be expected from random (trendless) data. If the estimated trend, 109: 4283: 4050: 3598: 3563: 3527: 3312: 2754: 2663: 2622: 2534: 2225: 2064: 1583: 1569: 1517: 960: 3320: 3304: 589: 4192: 3805: 3745: 3682: 3042: 2904: 2894: 2744: 2658: 3953: 3890: 4230: 4160: 3645: 3532: 2529: 2426: 2333: 2212: 2111: 1718: = 0.091, because the overall variance exceeds the means, whereas linear trend estimation gives 1562: 312: 4351: 3229: 4255: 4197: 4140: 3966: 3859: 3768: 3494: 3378: 3237: 3119: 3111: 2926: 2822: 2800: 2759: 2724: 2691: 2637: 2612: 2567: 2506: 2466: 2268: 2091: 1731: 802: 461: 4334: 3224: 796:
To analyze a (time) series of data, it can be assumed that it may be represented as trend plus noise:
4178: 3753: 3702: 3678: 3640: 3558: 3537: 3489: 3368: 3346: 3315: 3101: 3052: 2970: 2943: 2899: 2855: 2617: 2393: 2273: 2003: 1810: 1617: 1509: 1310:
Once the "noise" of the series is known, the significance of the trend can be assessed by making the
1211: 919: 327: 1586:, the linear trend in data can be estimated by using the 'tslm' function of the 'forecast' package. 1216: 4325: 4250: 4173: 3854: 3618: 3611: 3573: 3481: 3461: 3433: 3166: 3032: 3027: 3017: 3009: 2827: 2788: 2678: 2668: 2577: 2356: 2312: 2230: 2155: 2057: 1766: 1761: 1616:
at baseline to 3.4 mmol/L at one month and to 3.7 mmol/L at two months. Given sufficient power, an
3900: 1895:
Bianchi, M.; Boyle, M.; Hollingsworth, D. (1999). "A comparison of methods for trend estimation".
4339: 4150: 4004: 3849: 3725: 3622: 3606: 3583: 3360: 3094: 3077: 3037: 2948: 2843: 2805: 2776: 2736: 2696: 2642: 2559: 2245: 2240: 1626: 1407: 1368: 1082: 1024: 1341: 1053: 762: 671: 642: 429: 400: 1981:
Advanced Information on the Bank of Sweden Prize in Economic Sciences in Memory of Alfred Nobel
929: 4245: 4215: 4207: 4027: 4018: 3943: 3874: 3730: 3715: 3690: 3578: 3519: 3385: 3373: 2999: 2916: 2860: 2783: 2627: 2549: 2328: 2202: 2036: 2019: 1994: 1923: 1520:
of the trend line (see graph); the statistical significance of the trend is determined by its
4270: 4225: 3989: 3976: 3869: 3844: 3778: 3710: 3588: 3196: 3089: 3022: 2935: 2882: 2701: 2572: 2366: 2165: 2132: 2011: 1967: 1946: 1906: 1391: 1958:
Ho-Trieu, N. L.; Tucker, J. (1990). "Another note on the use of a logarithmic time trend".
1484: 1283: 1256: 1182: 562: 373: 4187: 3931: 3793: 3720: 3395: 3269: 3242: 3219: 3188: 2815: 2810: 2764: 2494: 2145: 1311: 316: 1334:, is not different from 0. From the above discussion of trends in random data with known 2007: 4136: 4131: 2594: 2524: 2170: 1317: 1033: 1006: 986: 966: 901: 881: 861: 353: 333: 4379: 4293: 4260: 4123: 4084: 3895: 3864: 3328: 3282: 2887: 2589: 2416: 2180: 2175: 1746: 1736: 1622: 1379: 1280:'s from the residuals — this is often the only way of estimating the variance of the 1030:
Commonly, where only a single time series exists to be analyzed, the variance of the
323: 31: 2446: 4235: 4168: 4145: 4060: 3390: 2686: 2584: 2519: 2461: 2383: 2338: 1950: 1756: 288: 1633:
in nucleotides XX, XY, YY are in fact a trend of no Y's, one Y, and then two Y's.
4278: 4240: 3923: 3824: 3686: 3499: 3466: 2958: 2875: 2870: 2514: 2471: 2451: 2431: 2421: 2190: 1741: 1604: 1542: 1521: 284: 17: 2015: 1839:"IPCC Third Assessment Report – Climate Change 2001 – Complete online versions" 3124: 2604: 2304: 2235: 2185: 2160: 2080: 1595: 272: 3277: 3129: 2749: 2544: 2456: 2441: 2436: 2401: 1910: 1608: 1575: 1375: 1050:'s is estimated by fitting a trend to obtain the estimated parameter values 923: 326:
fit is a common method to fit a straight line through the data. This method
2023: 1971: 2793: 2411: 2288: 2283: 2278: 2250: 1335: 4298: 3999: 1638: 559:
This formula first calculates the difference between the observed data
4220: 3201: 3175: 3155: 2406: 2197: 1613: 1600: 1989: 1918:
Cameron, S. (2005). "Making Regression Analysis More Useful, II".
1483: 1867: 2140: 308: 296: 292: 280: 276: 4109: 3676: 3423: 2722: 2492: 2109: 2053: 1554:
Dependence: autocorrelated time series might be modelled using
697:
derived from the data parameterize the simple linear estimator
315:
that can be chosen to fit the data. The simplest function is a
1922:. Maidenhead: McGraw Hill Higher Education. pp. 171–198. 1646: < 0.0001, whereas linear trend estimation gives 194: 139: 77: 36: 2049: 1568:
Non-normal distribution for errors: in the simplest cases, a
1023:'s all have the same distribution, but if not (if some have 922:. If one can reject the null hypothesis that the errors are 1937:
Chatfield, C. (1993). "Calculating Interval Forecasts".
1538:
independent and identically distributed random variables
215: 1787:"Making Regression More Useful II: Dummies and Trends" 1508:), which is 1 minus the ratio of the variance of the 1416:, and a sample series of length 50 is given, then if 1344: 1320: 1286: 1259: 1219: 1185: 1120: 1085: 1056: 1036: 1009: 989: 969: 932: 904: 884: 864: 805: 765: 703: 674: 645: 592: 565: 464: 432: 403: 376: 356: 336: 3962:
Autoregressive conditional heteroskedasticity (ARCH)
1528:
while making little difference to the fitted trend.
1500:
The least-squares fitting process produces a value,
1468:°C over 140 years, with 95% confidence limits of 0.2 4269: 4206: 4159: 4122: 4077: 4059: 4026: 4017: 3975: 3922: 3883: 3832: 3823: 3744: 3701: 3631: 3597: 3551: 3518: 3480: 3447: 3359: 3268: 3187: 3142: 3110: 3063: 3008: 2934: 2925: 2735: 2677: 2651: 2603: 2558: 2505: 2392: 2347: 2321: 2303: 2259: 2211: 2131: 2122: 210:
may be too technical for most readers to understand
27:
Statistical technique to aid interpretation of data
1367:, is larger than the critical value for a certain 1359: 1326: 1299: 1272: 1241: 1198: 1168: 1103: 1071: 1042: 1015: 995: 975: 951: 910: 890: 870: 847: 780: 751: 689: 660: 631: 578: 547: 447: 418: 389: 362: 342: 1456:record of the past 140 years as presented by the 1169:{\displaystyle {\hat {y}}={\hat {a}}t+{\hat {b}}} 752:{\displaystyle {\hat {y}}={\hat {a}}x+{\hat {b}}} 455:are chosen to minimize the sum of squared errors 330:the sum of the squared errors in the data series 1438:100, the trend will probably be visible; but if 3510:Multivariate adaptive regression splines (MARS) 1990:"Self-similarity of high-order moving averages" 2035:. London: Chapman and Hall. pp. 212–220. 1960:Review of Marketing and Agricultural Economics 1561:Non-constant variance: in the simplest cases, 1449:10000, the trend will be buried in the noise. 2065: 397:observed for those points in time, values of 8: 946: 933: 1988:Arianos, S.; Carbone, A.; Turk, C. (2011). 1939:Journal of Business and Economic Statistics 1488:Illustration of the effect of filtering on 295:that models the general direction that the 71:Learn how and when to remove these messages 4119: 4106: 4023: 3829: 3698: 3673: 3444: 3420: 3148: 2931: 2732: 2719: 2502: 2489: 2128: 2119: 2106: 2072: 2058: 2050: 2033:Practical Statistics for Medical Research 1452:Consider a concrete example, such as the 1346: 1345: 1343: 1319: 1291: 1285: 1264: 1258: 1233: 1222: 1221: 1218: 1190: 1184: 1155: 1154: 1137: 1136: 1122: 1121: 1119: 1087: 1086: 1084: 1058: 1057: 1055: 1035: 1008: 1003:may be inaccurate. It is simplest if the 988: 968: 940: 931: 903: 883: 863: 844: 838: 810: 804: 767: 766: 764: 738: 737: 720: 719: 705: 704: 702: 676: 675: 673: 647: 646: 644: 615: 614: 597: 596: 591: 570: 564: 539: 518: 517: 500: 499: 485: 469: 463: 434: 433: 431: 405: 404: 402: 381: 375: 355: 335: 256:Learn how and when to remove this message 238:Learn how and when to remove this message 222:, without removing the technical details. 183:Learn how and when to remove this message 128:Learn how and when to remove this message 1983:. The Royal Swedish Academy of Sciences. 1652: 1460:. The interannual variation is about 0.2 632:{\displaystyle ({\hat {a}}t+{\hat {b}})} 91:This article includes a list of general 30:For broader coverage of this topic, see 1811:"The Royal Swedish Academy of Sciences" 1778: 759:. The term "trend" refers to the slope 4036:Kaplan–Meier estimator (product limit) 1524:. Often, filtering a series increases 4386:Regression with time series structure 1253:, and estimating the variance of the 220:make it understandable to non-experts 7: 4346: 4046:Accelerated failure time (AFT) model 1869:Forecasting: principles and practice 1862: 1860: 1833: 1831: 1556:autoregressive moving average models 1111:thus allowing the predicted values 283:patterns, or trends, occur when the 4358: 3641:Analysis of variance (ANOVA, anova) 1714:This is a clear trend. ANOVA gives 1427:0.1, the trend will be obvious; if 3736:Cochran–Mantel–Haenszel statistics 2362:Pearson product-moment correlation 1629:, where it could be argued that a 1382:technique in econometric studies. 848:{\displaystyle y_{t}=at+b+e_{t}\,} 548:{\displaystyle \sum _{t}\left^{2}} 155:tone or style may not reflect the 97:it lacks sufficient corresponding 25: 926:, then the non-stationary series 52:This article has multiple issues. 4357: 4345: 4333: 4320: 4319: 788:in the least squares estimator. 350:. Given a set of points in time 199: 165:guide to writing better articles 144: 82: 41: 3995:Least-squares spectral analysis 1752:Least-squares spectral analysis 1179:to be subtracted from the data 60:or discuss these issues on the 2976:Mean-unbiased minimum-variance 1951:10.1080/07350015.1993.10509938 1631:single-nucleotide polymorphism 1464:°C, and the trend is about 0.6 1351: 1242:{\displaystyle {\hat {e}}_{t}} 1227: 1160: 1142: 1127: 1092: 1063: 898:are unknown constants and the 772: 743: 725: 710: 681: 652: 626: 620: 602: 593: 523: 505: 439: 410: 303:Fitting a trend: Least-squares 1: 4289:Geographic information system 3505:Simultaneous equations models 3472:Coefficient of determination 3083:Uniformly most powerful test 1618:ANOVA (analysis of variance) 918:'s are randomly distributed 4041:Proportional hazards models 3985:Spectral density estimation 3967:Vector autoregression (VAR) 3401:Maximum posterior estimator 2633:Randomized controlled trial 1104:{\displaystyle {\hat {b}},} 4412: 3801:Multivariate distributions 2221:Average absolute deviation 2016:10.1103/physreve.84.046113 1454:global surface temperature 1360:{\displaystyle {\hat {a}}} 1072:{\displaystyle {\hat {a}}} 781:{\displaystyle {\hat {a}}} 690:{\displaystyle {\hat {b}}} 661:{\displaystyle {\hat {a}}} 448:{\displaystyle {\hat {b}}} 419:{\displaystyle {\hat {a}}} 275:technique used to analyze 29: 4315: 4118: 4105: 3789:Structural equation model 3697: 3672: 3443: 3419: 3151: 3125:Score/Lagrange multiplier 2731: 2718: 2540:Sample size determination 2501: 2488: 2118: 2105: 2087: 1898:Applied Economics Letters 952:{\displaystyle \{y_{t}\}} 311:, there are a variety of 4284:Environmental statistics 3806:Elliptical distributions 3599:Generalized linear model 3528:Simple linear regression 3298:Hodges–Lehmann estimator 2755:Probability distribution 2664:Stochastic approximation 2226:Coefficient of variation 1570:generalized linear model 1546:model is mathematically 1518:statistical significance 4391:Statistical forecasting 3944:Cross-correlation (XCF) 3552:Non-standard predictors 2986:Lehmann–ScheffĂ© theorem 2659:Adaptive clinical trial 1911:10.1080/135048599353726 1590:Trends in clinical data 1210:the data), leaving the 792:Data as trend and noise 269:Linear trend estimation 159:used on Knowledge (XXG) 112:more precise citations. 4340:Mathematics portal 4161:Engineering statistics 4069:Nelson–Aalen estimator 3646:Analysis of covariance 3533:Ordinary least squares 3457:Pearson product-moment 2861:Statistical functional 2772:Empirical distribution 2605:Controlled experiments 2334:Frequency distribution 2112:Descriptive statistics 1972:10.22004/ag.econ.12288 1563:weighted least squares 1497: 1361: 1328: 1301: 1274: 1243: 1200: 1170: 1105: 1073: 1044: 1017: 997: 977: 953: 912: 892: 872: 849: 782: 753: 691: 662: 633: 580: 549: 449: 420: 391: 364: 344: 163:See Knowledge (XXG)'s 4256:Population statistics 4198:System identification 3932:Autocorrelation (ACF) 3860:Exponential smoothing 3774:Discriminant analysis 3769:Canonical correlation 3633:Partition of variance 3495:Regression validation 3339:(Jonckheere–Terpstra) 3238:Likelihood-ratio test 2927:Frequentist inference 2839:Location–scale family 2760:Sampling distribution 2725:Statistical inference 2692:Cross-sectional study 2679:Observational studies 2638:Randomized experiment 2467:Stem-and-leaf display 2269:Central limit theorem 2031:Altman, D.G. (1991). 1496:of fitted trend line. 1487: 1362: 1329: 1302: 1300:{\displaystyle e_{t}} 1275: 1273:{\displaystyle e_{t}} 1244: 1201: 1199:{\displaystyle y_{t}} 1171: 1106: 1074: 1045: 1018: 998: 978: 954: 913: 893: 873: 850: 783: 754: 692: 663: 634: 581: 579:{\displaystyle y_{t}} 550: 450: 421: 392: 390:{\displaystyle y_{t}} 365: 345: 4179:Probabilistic design 3764:Principal components 3607:Exponential families 3559:Nonlinear regression 3538:General linear model 3500:Mixed effects models 3490:Errors and residuals 3467:Confounding variable 3369:Bayesian probability 3347:Van der Waerden test 3337:Ordered alternative 3102:Multiple comparisons 2981:Rao–Blackwellization 2944:Estimating equations 2900:Statistical distance 2618:Factorial experiment 2151:Arithmetic-Geometric 1845:on November 20, 2009 1572:might be applicable. 1541:effects that have a 1342: 1318: 1284: 1257: 1217: 1183: 1118: 1083: 1054: 1034: 1007: 987: 967: 930: 902: 882: 862: 803: 763: 701: 672: 643: 590: 563: 462: 430: 401: 374: 354: 334: 4251:Official statistics 4174:Methods engineering 3855:Seasonal adjustment 3623:Poisson regressions 3543:Bayesian regression 3482:Regression analysis 3462:Partial correlation 3434:Regression analysis 3033:Prediction interval 3028:Likelihood interval 3018:Confidence interval 3010:Interval estimation 2971:Unbiased estimators 2789:Model specification 2669:Up-and-down designs 2357:Partial correlation 2313:Index of dispersion 2231:Interquartile range 2008:2011PhRvE..84d6113A 1872:. 20 September 2014 1767:Regression analysis 1762:Prediction interval 1654: 1480:-squared) and trend 4271:Spatial statistics 4151:Medical statistics 4051:First hitting time 4005:Whittle likelihood 3656:Degrees of freedom 3651:Multivariate ANOVA 3584:Heteroscedasticity 3396:Bayesian estimator 3361:Bayesian inference 3210:Kolmogorov–Smirnov 3095:Randomization test 3065:Testing hypotheses 3038:Tolerance interval 2949:Maximum likelihood 2844:Exponential family 2777:Density estimation 2737:Statistical theory 2697:Natural experiment 2643:Scientific control 2560:Survey methodology 2246:Standard deviation 1653: 1627:genotype frequency 1498: 1408:standard deviation 1369:significance level 1357: 1324: 1297: 1270: 1239: 1196: 1166: 1101: 1069: 1040: 1013: 993: 973: 949: 908: 888: 868: 845: 778: 749: 687: 658: 629: 576: 545: 474: 445: 416: 387: 360: 340: 4373: 4372: 4311: 4310: 4307: 4306: 4246:National accounts 4216:Actuarial science 4208:Social statistics 4101: 4100: 4097: 4096: 4093: 4092: 4028:Survival function 4013: 4012: 3875:Granger causality 3716:Contingency table 3691:Survival analysis 3668: 3667: 3664: 3663: 3520:Linear regression 3415: 3414: 3411: 3410: 3386:Credible interval 3355: 3354: 3138: 3137: 2954:Method of moments 2823:Parametric family 2784:Statistical model 2714: 2713: 2710: 2709: 2628:Random assignment 2550:Statistical power 2484: 2483: 2480: 2479: 2329:Contingency table 2299: 2298: 2166:Generalized/power 1995:Physical Review E 1712: 1711: 1476:Goodness of fit ( 1398:Noisy time series 1354: 1327:{\displaystyle a} 1230: 1163: 1145: 1130: 1095: 1066: 1043:{\displaystyle e} 1016:{\displaystyle e} 996:{\displaystyle b} 976:{\displaystyle a} 911:{\displaystyle e} 891:{\displaystyle b} 871:{\displaystyle a} 775: 746: 728: 713: 684: 655: 623: 605: 586:and the estimate 526: 508: 465: 442: 413: 363:{\displaystyle t} 343:{\displaystyle y} 266: 265: 258: 248: 247: 240: 193: 192: 185: 157:encyclopedic tone 138: 137: 130: 75: 16:(Redirected from 4403: 4396:Change detection 4361: 4360: 4349: 4348: 4338: 4337: 4323: 4322: 4226:Crime statistics 4120: 4107: 4024: 3990:Fourier analysis 3977:Frequency domain 3957: 3904: 3870:Structural break 3830: 3779:Cluster analysis 3726:Log-linear model 3699: 3674: 3615: 3589:Homoscedasticity 3445: 3421: 3340: 3332: 3324: 3323:(Kruskal–Wallis) 3308: 3293: 3248:Cross validation 3233: 3215:Anderson–Darling 3162: 3149: 3120:Likelihood-ratio 3112:Parametric tests 3090:Permutation test 3073:1- & 2-tails 2964:Minimum distance 2936:Point estimation 2932: 2883:Optimal decision 2834: 2733: 2720: 2702:Quasi-experiment 2652:Adaptive designs 2503: 2490: 2367:Rank correlation 2129: 2120: 2107: 2074: 2067: 2060: 2051: 2046: 2027: 1984: 1975: 1954: 1933: 1914: 1882: 1881: 1879: 1877: 1864: 1855: 1854: 1852: 1850: 1841:. Archived from 1835: 1826: 1825: 1823: 1821: 1816:. 8 October 2003 1815: 1807: 1801: 1800: 1798: 1796: 1791: 1783: 1655: 1471: 1467: 1463: 1448: 1444: 1437: 1433: 1426: 1422: 1412: 1366: 1364: 1363: 1358: 1356: 1355: 1347: 1333: 1331: 1330: 1325: 1314:that the trend, 1306: 1304: 1303: 1298: 1296: 1295: 1279: 1277: 1276: 1271: 1269: 1268: 1248: 1246: 1245: 1240: 1238: 1237: 1232: 1231: 1223: 1205: 1203: 1202: 1197: 1195: 1194: 1175: 1173: 1172: 1167: 1165: 1164: 1156: 1147: 1146: 1138: 1132: 1131: 1123: 1110: 1108: 1107: 1102: 1097: 1096: 1088: 1078: 1076: 1075: 1070: 1068: 1067: 1059: 1049: 1047: 1046: 1041: 1022: 1020: 1019: 1014: 1002: 1000: 999: 994: 982: 980: 979: 974: 961:trend-stationary 958: 956: 955: 950: 945: 944: 917: 915: 914: 909: 897: 895: 894: 889: 877: 875: 874: 869: 854: 852: 851: 846: 843: 842: 815: 814: 787: 785: 784: 779: 777: 776: 768: 758: 756: 755: 750: 748: 747: 739: 730: 729: 721: 715: 714: 706: 696: 694: 693: 688: 686: 685: 677: 667: 665: 664: 659: 657: 656: 648: 638: 636: 635: 630: 625: 624: 616: 607: 606: 598: 585: 583: 582: 577: 575: 574: 554: 552: 551: 546: 544: 543: 538: 534: 533: 529: 528: 527: 519: 510: 509: 501: 490: 489: 473: 454: 452: 451: 446: 444: 443: 435: 425: 423: 422: 417: 415: 414: 406: 396: 394: 393: 388: 386: 385: 370:and data values 369: 367: 366: 361: 349: 347: 346: 341: 261: 254: 243: 236: 232: 229: 223: 203: 202: 195: 188: 181: 177: 174: 168: 167:for suggestions. 148: 147: 140: 133: 126: 122: 119: 113: 108:this article by 99:inline citations 86: 85: 78: 67: 45: 44: 37: 21: 18:Trend estimation 4411: 4410: 4406: 4405: 4404: 4402: 4401: 4400: 4376: 4375: 4374: 4369: 4332: 4303: 4265: 4202: 4188:quality control 4155: 4137:Clinical trials 4114: 4089: 4073: 4061:Hazard function 4055: 4009: 3971: 3955: 3918: 3914:Breusch–Godfrey 3902: 3879: 3819: 3794:Factor analysis 3740: 3721:Graphical model 3693: 3660: 3627: 3613: 3593: 3547: 3514: 3476: 3439: 3438: 3407: 3351: 3338: 3330: 3322: 3306: 3291: 3270:Rank statistics 3264: 3243:Model selection 3231: 3189:Goodness of fit 3183: 3160: 3134: 3106: 3059: 3004: 2993:Median unbiased 2921: 2832: 2765:Order statistic 2727: 2706: 2673: 2647: 2599: 2554: 2497: 2495:Data collection 2476: 2388: 2343: 2317: 2295: 2255: 2207: 2124:Continuous data 2114: 2101: 2083: 2078: 2043: 2030: 1987: 1978: 1957: 1936: 1930: 1917: 1894: 1891: 1886: 1885: 1875: 1873: 1866: 1865: 1858: 1848: 1846: 1837: 1836: 1829: 1819: 1817: 1813: 1809: 1808: 1804: 1794: 1792: 1789: 1785: 1784: 1780: 1775: 1728: 1592: 1534: 1532:Advanced models 1482: 1469: 1465: 1461: 1446: 1442: 1435: 1431: 1424: 1420: 1410: 1400: 1340: 1339: 1316: 1315: 1312:null hypothesis 1287: 1282: 1281: 1260: 1255: 1254: 1220: 1215: 1214: 1186: 1181: 1180: 1116: 1115: 1081: 1080: 1052: 1051: 1032: 1031: 1025:higher variance 1005: 1004: 985: 984: 965: 964: 936: 928: 927: 900: 899: 880: 879: 860: 859: 834: 806: 801: 800: 794: 761: 760: 699: 698: 670: 669: 641: 640: 588: 587: 566: 561: 560: 498: 494: 481: 480: 476: 475: 460: 459: 428: 427: 399: 398: 377: 372: 371: 352: 351: 332: 331: 307:Given a set of 305: 262: 251: 250: 249: 244: 233: 227: 224: 216:help improve it 213: 204: 200: 189: 178: 172: 169: 162: 153:This article's 149: 145: 134: 123: 117: 114: 104:Please help to 103: 87: 83: 46: 42: 35: 28: 23: 22: 15: 12: 11: 5: 4409: 4407: 4399: 4398: 4393: 4388: 4378: 4377: 4371: 4370: 4368: 4367: 4355: 4343: 4329: 4316: 4313: 4312: 4309: 4308: 4305: 4304: 4302: 4301: 4296: 4291: 4286: 4281: 4275: 4273: 4267: 4266: 4264: 4263: 4258: 4253: 4248: 4243: 4238: 4233: 4228: 4223: 4218: 4212: 4210: 4204: 4203: 4201: 4200: 4195: 4190: 4181: 4176: 4171: 4165: 4163: 4157: 4156: 4154: 4153: 4148: 4143: 4134: 4132:Bioinformatics 4128: 4126: 4116: 4115: 4110: 4103: 4102: 4099: 4098: 4095: 4094: 4091: 4090: 4088: 4087: 4081: 4079: 4075: 4074: 4072: 4071: 4065: 4063: 4057: 4056: 4054: 4053: 4048: 4043: 4038: 4032: 4030: 4021: 4015: 4014: 4011: 4010: 4008: 4007: 4002: 3997: 3992: 3987: 3981: 3979: 3973: 3972: 3970: 3969: 3964: 3959: 3951: 3946: 3941: 3940: 3939: 3937:partial (PACF) 3928: 3926: 3920: 3919: 3917: 3916: 3911: 3906: 3898: 3893: 3887: 3885: 3884:Specific tests 3881: 3880: 3878: 3877: 3872: 3867: 3862: 3857: 3852: 3847: 3842: 3836: 3834: 3827: 3821: 3820: 3818: 3817: 3816: 3815: 3814: 3813: 3798: 3797: 3796: 3786: 3784:Classification 3781: 3776: 3771: 3766: 3761: 3756: 3750: 3748: 3742: 3741: 3739: 3738: 3733: 3731:McNemar's test 3728: 3723: 3718: 3713: 3707: 3705: 3695: 3694: 3677: 3670: 3669: 3666: 3665: 3662: 3661: 3659: 3658: 3653: 3648: 3643: 3637: 3635: 3629: 3628: 3626: 3625: 3609: 3603: 3601: 3595: 3594: 3592: 3591: 3586: 3581: 3576: 3571: 3569:Semiparametric 3566: 3561: 3555: 3553: 3549: 3548: 3546: 3545: 3540: 3535: 3530: 3524: 3522: 3516: 3515: 3513: 3512: 3507: 3502: 3497: 3492: 3486: 3484: 3478: 3477: 3475: 3474: 3469: 3464: 3459: 3453: 3451: 3441: 3440: 3437: 3436: 3431: 3425: 3424: 3417: 3416: 3413: 3412: 3409: 3408: 3406: 3405: 3404: 3403: 3393: 3388: 3383: 3382: 3381: 3376: 3365: 3363: 3357: 3356: 3353: 3352: 3350: 3349: 3344: 3343: 3342: 3334: 3326: 3310: 3307:(Mann–Whitney) 3302: 3301: 3300: 3287: 3286: 3285: 3274: 3272: 3266: 3265: 3263: 3262: 3261: 3260: 3255: 3250: 3240: 3235: 3232:(Shapiro–Wilk) 3227: 3222: 3217: 3212: 3207: 3199: 3193: 3191: 3185: 3184: 3182: 3181: 3173: 3164: 3152: 3146: 3144:Specific tests 3140: 3139: 3136: 3135: 3133: 3132: 3127: 3122: 3116: 3114: 3108: 3107: 3105: 3104: 3099: 3098: 3097: 3087: 3086: 3085: 3075: 3069: 3067: 3061: 3060: 3058: 3057: 3056: 3055: 3050: 3040: 3035: 3030: 3025: 3020: 3014: 3012: 3006: 3005: 3003: 3002: 2997: 2996: 2995: 2990: 2989: 2988: 2983: 2968: 2967: 2966: 2961: 2956: 2951: 2940: 2938: 2929: 2923: 2922: 2920: 2919: 2914: 2909: 2908: 2907: 2897: 2892: 2891: 2890: 2880: 2879: 2878: 2873: 2868: 2858: 2853: 2848: 2847: 2846: 2841: 2836: 2820: 2819: 2818: 2813: 2808: 2798: 2797: 2796: 2791: 2781: 2780: 2779: 2769: 2768: 2767: 2757: 2752: 2747: 2741: 2739: 2729: 2728: 2723: 2716: 2715: 2712: 2711: 2708: 2707: 2705: 2704: 2699: 2694: 2689: 2683: 2681: 2675: 2674: 2672: 2671: 2666: 2661: 2655: 2653: 2649: 2648: 2646: 2645: 2640: 2635: 2630: 2625: 2620: 2615: 2609: 2607: 2601: 2600: 2598: 2597: 2595:Standard error 2592: 2587: 2582: 2581: 2580: 2575: 2564: 2562: 2556: 2555: 2553: 2552: 2547: 2542: 2537: 2532: 2527: 2525:Optimal design 2522: 2517: 2511: 2509: 2499: 2498: 2493: 2486: 2485: 2482: 2481: 2478: 2477: 2475: 2474: 2469: 2464: 2459: 2454: 2449: 2444: 2439: 2434: 2429: 2424: 2419: 2414: 2409: 2404: 2398: 2396: 2390: 2389: 2387: 2386: 2381: 2380: 2379: 2374: 2364: 2359: 2353: 2351: 2345: 2344: 2342: 2341: 2336: 2331: 2325: 2323: 2322:Summary tables 2319: 2318: 2316: 2315: 2309: 2307: 2301: 2300: 2297: 2296: 2294: 2293: 2292: 2291: 2286: 2281: 2271: 2265: 2263: 2257: 2256: 2254: 2253: 2248: 2243: 2238: 2233: 2228: 2223: 2217: 2215: 2209: 2208: 2206: 2205: 2200: 2195: 2194: 2193: 2188: 2183: 2178: 2173: 2168: 2163: 2158: 2156:Contraharmonic 2153: 2148: 2137: 2135: 2126: 2116: 2115: 2110: 2103: 2102: 2100: 2099: 2094: 2088: 2085: 2084: 2079: 2077: 2076: 2069: 2062: 2054: 2048: 2047: 2041: 2028: 1985: 1976: 1955: 1945:(2): 121–135. 1934: 1928: 1915: 1905:(2): 103–109. 1890: 1887: 1884: 1883: 1856: 1827: 1802: 1777: 1776: 1774: 1771: 1770: 1769: 1764: 1759: 1754: 1749: 1744: 1739: 1734: 1727: 1724: 1710: 1709: 1706: 1703: 1699: 1698: 1695: 1692: 1688: 1687: 1684: 1681: 1677: 1676: 1673: 1670: 1666: 1665: 1662: 1659: 1591: 1588: 1580: 1579: 1573: 1566: 1565:might be used. 1559: 1533: 1530: 1516:relate to the 1481: 1474: 1399: 1396: 1378:tests and the 1353: 1350: 1323: 1294: 1290: 1267: 1263: 1251:detrended data 1236: 1229: 1226: 1193: 1189: 1177: 1176: 1162: 1159: 1153: 1150: 1144: 1141: 1135: 1129: 1126: 1100: 1094: 1091: 1065: 1062: 1039: 1012: 992: 972: 948: 943: 939: 935: 924:non-stationary 907: 887: 867: 856: 855: 841: 837: 833: 830: 827: 824: 821: 818: 813: 809: 793: 790: 774: 771: 745: 742: 736: 733: 727: 724: 718: 712: 709: 683: 680: 654: 651: 628: 622: 619: 613: 610: 604: 601: 595: 573: 569: 557: 556: 542: 537: 532: 525: 522: 516: 513: 507: 504: 497: 493: 488: 484: 479: 472: 468: 441: 438: 412: 409: 384: 380: 359: 339: 304: 301: 299:is heading. 264: 263: 246: 245: 207: 205: 198: 191: 190: 173:September 2023 152: 150: 143: 136: 135: 90: 88: 81: 76: 50: 49: 47: 40: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 4408: 4397: 4394: 4392: 4389: 4387: 4384: 4383: 4381: 4366: 4365: 4356: 4354: 4353: 4344: 4342: 4341: 4336: 4330: 4328: 4327: 4318: 4317: 4314: 4300: 4297: 4295: 4294:Geostatistics 4292: 4290: 4287: 4285: 4282: 4280: 4277: 4276: 4274: 4272: 4268: 4262: 4261:Psychometrics 4259: 4257: 4254: 4252: 4249: 4247: 4244: 4242: 4239: 4237: 4234: 4232: 4229: 4227: 4224: 4222: 4219: 4217: 4214: 4213: 4211: 4209: 4205: 4199: 4196: 4194: 4191: 4189: 4185: 4182: 4180: 4177: 4175: 4172: 4170: 4167: 4166: 4164: 4162: 4158: 4152: 4149: 4147: 4144: 4142: 4138: 4135: 4133: 4130: 4129: 4127: 4125: 4124:Biostatistics 4121: 4117: 4113: 4108: 4104: 4086: 4085:Log-rank test 4083: 4082: 4080: 4076: 4070: 4067: 4066: 4064: 4062: 4058: 4052: 4049: 4047: 4044: 4042: 4039: 4037: 4034: 4033: 4031: 4029: 4025: 4022: 4020: 4016: 4006: 4003: 4001: 3998: 3996: 3993: 3991: 3988: 3986: 3983: 3982: 3980: 3978: 3974: 3968: 3965: 3963: 3960: 3958: 3956:(Box–Jenkins) 3952: 3950: 3947: 3945: 3942: 3938: 3935: 3934: 3933: 3930: 3929: 3927: 3925: 3921: 3915: 3912: 3910: 3909:Durbin–Watson 3907: 3905: 3899: 3897: 3894: 3892: 3891:Dickey–Fuller 3889: 3888: 3886: 3882: 3876: 3873: 3871: 3868: 3866: 3865:Cointegration 3863: 3861: 3858: 3856: 3853: 3851: 3848: 3846: 3843: 3841: 3840:Decomposition 3838: 3837: 3835: 3831: 3828: 3826: 3822: 3812: 3809: 3808: 3807: 3804: 3803: 3802: 3799: 3795: 3792: 3791: 3790: 3787: 3785: 3782: 3780: 3777: 3775: 3772: 3770: 3767: 3765: 3762: 3760: 3757: 3755: 3752: 3751: 3749: 3747: 3743: 3737: 3734: 3732: 3729: 3727: 3724: 3722: 3719: 3717: 3714: 3712: 3711:Cohen's kappa 3709: 3708: 3706: 3704: 3700: 3696: 3692: 3688: 3684: 3680: 3675: 3671: 3657: 3654: 3652: 3649: 3647: 3644: 3642: 3639: 3638: 3636: 3634: 3630: 3624: 3620: 3616: 3610: 3608: 3605: 3604: 3602: 3600: 3596: 3590: 3587: 3585: 3582: 3580: 3577: 3575: 3572: 3570: 3567: 3565: 3564:Nonparametric 3562: 3560: 3557: 3556: 3554: 3550: 3544: 3541: 3539: 3536: 3534: 3531: 3529: 3526: 3525: 3523: 3521: 3517: 3511: 3508: 3506: 3503: 3501: 3498: 3496: 3493: 3491: 3488: 3487: 3485: 3483: 3479: 3473: 3470: 3468: 3465: 3463: 3460: 3458: 3455: 3454: 3452: 3450: 3446: 3442: 3435: 3432: 3430: 3427: 3426: 3422: 3418: 3402: 3399: 3398: 3397: 3394: 3392: 3389: 3387: 3384: 3380: 3377: 3375: 3372: 3371: 3370: 3367: 3366: 3364: 3362: 3358: 3348: 3345: 3341: 3335: 3333: 3327: 3325: 3319: 3318: 3317: 3314: 3313:Nonparametric 3311: 3309: 3303: 3299: 3296: 3295: 3294: 3288: 3284: 3283:Sample median 3281: 3280: 3279: 3276: 3275: 3273: 3271: 3267: 3259: 3256: 3254: 3251: 3249: 3246: 3245: 3244: 3241: 3239: 3236: 3234: 3228: 3226: 3223: 3221: 3218: 3216: 3213: 3211: 3208: 3206: 3204: 3200: 3198: 3195: 3194: 3192: 3190: 3186: 3180: 3178: 3174: 3172: 3170: 3165: 3163: 3158: 3154: 3153: 3150: 3147: 3145: 3141: 3131: 3128: 3126: 3123: 3121: 3118: 3117: 3115: 3113: 3109: 3103: 3100: 3096: 3093: 3092: 3091: 3088: 3084: 3081: 3080: 3079: 3076: 3074: 3071: 3070: 3068: 3066: 3062: 3054: 3051: 3049: 3046: 3045: 3044: 3041: 3039: 3036: 3034: 3031: 3029: 3026: 3024: 3021: 3019: 3016: 3015: 3013: 3011: 3007: 3001: 2998: 2994: 2991: 2987: 2984: 2982: 2979: 2978: 2977: 2974: 2973: 2972: 2969: 2965: 2962: 2960: 2957: 2955: 2952: 2950: 2947: 2946: 2945: 2942: 2941: 2939: 2937: 2933: 2930: 2928: 2924: 2918: 2915: 2913: 2910: 2906: 2903: 2902: 2901: 2898: 2896: 2893: 2889: 2888:loss function 2886: 2885: 2884: 2881: 2877: 2874: 2872: 2869: 2867: 2864: 2863: 2862: 2859: 2857: 2854: 2852: 2849: 2845: 2842: 2840: 2837: 2835: 2829: 2826: 2825: 2824: 2821: 2817: 2814: 2812: 2809: 2807: 2804: 2803: 2802: 2799: 2795: 2792: 2790: 2787: 2786: 2785: 2782: 2778: 2775: 2774: 2773: 2770: 2766: 2763: 2762: 2761: 2758: 2756: 2753: 2751: 2748: 2746: 2743: 2742: 2740: 2738: 2734: 2730: 2726: 2721: 2717: 2703: 2700: 2698: 2695: 2693: 2690: 2688: 2685: 2684: 2682: 2680: 2676: 2670: 2667: 2665: 2662: 2660: 2657: 2656: 2654: 2650: 2644: 2641: 2639: 2636: 2634: 2631: 2629: 2626: 2624: 2621: 2619: 2616: 2614: 2611: 2610: 2608: 2606: 2602: 2596: 2593: 2591: 2590:Questionnaire 2588: 2586: 2583: 2579: 2576: 2574: 2571: 2570: 2569: 2566: 2565: 2563: 2561: 2557: 2551: 2548: 2546: 2543: 2541: 2538: 2536: 2533: 2531: 2528: 2526: 2523: 2521: 2518: 2516: 2513: 2512: 2510: 2508: 2504: 2500: 2496: 2491: 2487: 2473: 2470: 2468: 2465: 2463: 2460: 2458: 2455: 2453: 2450: 2448: 2445: 2443: 2440: 2438: 2435: 2433: 2430: 2428: 2425: 2423: 2420: 2418: 2417:Control chart 2415: 2413: 2410: 2408: 2405: 2403: 2400: 2399: 2397: 2395: 2391: 2385: 2382: 2378: 2375: 2373: 2370: 2369: 2368: 2365: 2363: 2360: 2358: 2355: 2354: 2352: 2350: 2346: 2340: 2337: 2335: 2332: 2330: 2327: 2326: 2324: 2320: 2314: 2311: 2310: 2308: 2306: 2302: 2290: 2287: 2285: 2282: 2280: 2277: 2276: 2275: 2272: 2270: 2267: 2266: 2264: 2262: 2258: 2252: 2249: 2247: 2244: 2242: 2239: 2237: 2234: 2232: 2229: 2227: 2224: 2222: 2219: 2218: 2216: 2214: 2210: 2204: 2201: 2199: 2196: 2192: 2189: 2187: 2184: 2182: 2179: 2177: 2174: 2172: 2169: 2167: 2164: 2162: 2159: 2157: 2154: 2152: 2149: 2147: 2144: 2143: 2142: 2139: 2138: 2136: 2134: 2130: 2127: 2125: 2121: 2117: 2113: 2108: 2104: 2098: 2095: 2093: 2090: 2089: 2086: 2082: 2075: 2070: 2068: 2063: 2061: 2056: 2055: 2052: 2044: 2038: 2034: 2029: 2025: 2021: 2017: 2013: 2009: 2005: 2002:(4): 046113. 2001: 1997: 1996: 1991: 1986: 1982: 1977: 1973: 1969: 1965: 1961: 1956: 1952: 1948: 1944: 1940: 1935: 1931: 1925: 1921: 1916: 1912: 1908: 1904: 1900: 1899: 1893: 1892: 1888: 1871: 1870: 1863: 1861: 1857: 1844: 1840: 1834: 1832: 1828: 1812: 1806: 1803: 1788: 1782: 1779: 1772: 1768: 1765: 1763: 1760: 1758: 1755: 1753: 1750: 1748: 1747:Least squares 1745: 1743: 1740: 1738: 1737:Extrapolation 1735: 1733: 1730: 1729: 1725: 1723: 1721: 1717: 1707: 1704: 1701: 1700: 1696: 1693: 1690: 1689: 1685: 1682: 1679: 1678: 1674: 1671: 1668: 1667: 1663: 1660: 1657: 1656: 1651: 1649: 1645: 1640: 1634: 1632: 1628: 1624: 1623:Friedman test 1619: 1615: 1610: 1606: 1603:on levels of 1602: 1597: 1589: 1587: 1585: 1577: 1574: 1571: 1567: 1564: 1560: 1557: 1553: 1552: 1551: 1549: 1544: 1539: 1531: 1529: 1527: 1523: 1519: 1515: 1511: 1507: 1503: 1495: 1491: 1486: 1479: 1475: 1473: 1459: 1455: 1450: 1441: 1430: 1419: 1415: 1409: 1405: 1397: 1395: 1393: 1387: 1383: 1381: 1380:cointegration 1377: 1372: 1370: 1348: 1337: 1321: 1313: 1308: 1292: 1288: 1265: 1261: 1252: 1234: 1224: 1213: 1209: 1191: 1187: 1157: 1151: 1148: 1139: 1133: 1124: 1114: 1113: 1112: 1098: 1089: 1060: 1037: 1028: 1026: 1010: 990: 970: 962: 941: 937: 925: 921: 905: 885: 865: 839: 835: 831: 828: 825: 822: 819: 816: 811: 807: 799: 798: 797: 791: 789: 769: 740: 734: 731: 722: 716: 707: 678: 649: 617: 611: 608: 599: 571: 567: 540: 535: 530: 520: 514: 511: 502: 495: 491: 486: 482: 477: 470: 466: 458: 457: 456: 436: 407: 382: 378: 357: 337: 329: 325: 324:least-squares 320: 318: 317:straight line 314: 310: 302: 300: 298: 294: 290: 286: 282: 278: 274: 270: 260: 257: 242: 239: 231: 228:December 2023 221: 217: 211: 208:This article 206: 197: 196: 187: 184: 176: 166: 160: 158: 151: 142: 141: 132: 129: 121: 111: 107: 101: 100: 94: 89: 80: 79: 74: 72: 65: 64: 59: 58: 53: 48: 39: 38: 33: 32:Curve fitting 19: 4362: 4350: 4331: 4324: 4236:Econometrics 4186: / 4169:Chemometrics 4146:Epidemiology 4139: / 4112:Applications 3954:ARIMA model 3901:Q-statistic 3850:Stationarity 3746:Multivariate 3689: / 3685: / 3683:Multivariate 3681: / 3621: / 3617: / 3391:Bayes factor 3290:Signed rank 3202: 3176: 3168: 3156: 2851:Completeness 2687:Cohort study 2585:Opinion poll 2520:Missing data 2507:Study design 2462:Scatter plot 2384:Scatter plot 2377:Spearman's ρ 2339:Grouped data 2032: 1999: 1993: 1980: 1966:(1): 89–90. 1963: 1959: 1942: 1938: 1920:Econometrics 1919: 1902: 1896: 1874:. Retrieved 1868: 1847:. Retrieved 1843:the original 1818:. Retrieved 1805: 1793:. Retrieved 1781: 1757:Line fitting 1719: 1715: 1713: 1647: 1643: 1635: 1594:Medical and 1593: 1581: 1548:misspecified 1535: 1525: 1513: 1505: 1499: 1493: 1489: 1477: 1451: 1439: 1428: 1417: 1413: 1403: 1401: 1388: 1384: 1373: 1309: 1250: 1207: 1178: 1029: 857: 795: 558: 321: 306: 268: 267: 252: 234: 225: 209: 179: 170: 154: 124: 115: 96: 68: 61: 55: 54:Please help 51: 4364:WikiProject 4279:Cartography 4241:Jurimetrics 4193:Reliability 3924:Time domain 3903:(Ljung–Box) 3825:Time-series 3703:Categorical 3687:Time-series 3679:Categorical 3614:(Bernoulli) 3449:Correlation 3429:Correlation 3225:Jarque–Bera 3197:Chi-squared 2959:M-estimator 2912:Asymptotics 2856:Sufficiency 2623:Interaction 2535:Replication 2515:Effect size 2472:Violin plot 2452:Radar chart 2432:Forest plot 2422:Correlogram 2372:Kendall's τ 2042:041227630-5 1742:Forecasting 1605:cholesterol 1543:correlation 1522:t-statistic 285:information 273:statistical 110:introducing 4380:Categories 4231:Demography 3949:ARMA model 3754:Regression 3331:(Friedman) 3292:(Wilcoxon) 3230:Normality 3220:Lilliefors 3167:Student's 3043:Resampling 2917:Robustness 2905:divergence 2895:Efficiency 2833:(monotone) 2828:Likelihood 2745:Population 2578:Stratified 2530:Population 2349:Dependence 2305:Count data 2236:Percentile 2213:Dispersion 2146:Arithmetic 2081:Statistics 1929:0077104285 1889:References 1732:Estimation 1596:biomedical 1208:detrending 959:is called 279:patterns. 93:references 57:improve it 3612:Logistic 3379:posterior 3305:Rank sum 3053:Jackknife 3048:Bootstrap 2866:Bootstrap 2801:Parameter 2750:Statistic 2545:Statistic 2457:Run chart 2442:Pie chart 2437:Histogram 2427:Fan chart 2402:Bar chart 2284:L-moments 2171:Geometric 1609:analgesic 1576:Unit root 1510:residuals 1502:r-squared 1376:unit root 1352:^ 1228:^ 1212:residuals 1161:^ 1143:^ 1128:^ 1093:^ 1064:^ 773:^ 744:^ 726:^ 711:^ 682:^ 653:^ 621:^ 603:^ 524:^ 506:^ 492:− 467:∑ 440:^ 411:^ 328:minimizes 313:functions 118:July 2019 63:talk page 4326:Category 4019:Survival 3896:Johansen 3619:Binomial 3574:Isotonic 3161:(normal) 2806:location 2613:Blocking 2568:Sampling 2447:Q–Q plot 2412:Box plot 2394:Graphics 2289:Skewness 2279:Kurtosis 2251:Variance 2181:Heronian 2176:Harmonic 2024:22181233 1849:June 17, 1820:June 17, 1795:June 17, 1726:See also 1336:variance 4352:Commons 4299:Kriging 4184:Process 4141:studies 4000:Wavelet 3833:General 3000:Plug-in 2794:L space 2573:Cluster 2274:Moments 2092:Outline 2004:Bibcode 1876:May 17, 1639:trypsin 1249:as the 214:Please 106:improve 4221:Census 3811:Normal 3759:Manova 3579:Robust 3329:2-way 3321:1-way 3159:-test 2830:  2407:Biplot 2198:Median 2191:Lehmer 2133:Center 2039:  2022:  1926:  1614:mmol/L 1601:statin 1470:  1466:  1462:  1447:  1443:  1436:  1432:  1425:  1421:  1411:  1392:cycles 1206:(thus 920:errors 858:where 95:, but 3845:Trend 3374:prior 3316:anova 3205:-test 3179:-test 3171:-test 3078:Power 3023:Pivot 2816:shape 2811:scale 2261:Shape 2241:Range 2186:Heinz 2161:Cubic 2097:Index 1814:(PDF) 1790:(PDF) 1773:Notes 1708:0.79 1705:2.40 1697:0.66 1694:2.22 1686:0.75 1683:1.94 1675:0.56 1661:mean 1607:, an 289:graph 271:is a 4078:Test 3278:Sign 3130:Wald 2203:Mode 2141:Mean 2037:ISBN 2020:PMID 1924:ISBN 1878:2015 1851:2012 1822:2012 1797:2012 1672:1.6 1458:IPCC 1307:'s. 1079:and 983:and 878:and 668:and 426:and 322:The 309:data 297:data 293:data 281:Data 277:data 3258:BIC 3253:AIC 2012:doi 1968:doi 1947:doi 1907:doi 1664:SD 1582:In 1514:not 1406:of 291:of 218:to 4382:: 2018:. 2010:. 2000:84 1998:. 1992:. 1964:58 1962:. 1943:11 1941:. 1901:. 1859:^ 1830:^ 1702:4 1691:3 1680:2 1669:1 1658:# 1394:. 66:. 3203:G 3177:F 3169:t 3157:Z 2876:V 2871:U 2073:e 2066:t 2059:v 2045:. 2026:. 2014:: 2006:: 1974:. 1970:: 1953:. 1949:: 1932:. 1913:. 1909:: 1903:6 1880:. 1853:. 1824:. 1799:. 1720:p 1716:p 1648:p 1644:p 1584:R 1558:. 1526:r 1506:r 1504:( 1494:r 1490:r 1478:r 1445:= 1440:E 1434:= 1429:E 1423:= 1418:E 1414:E 1404:e 1349:a 1322:a 1293:t 1289:e 1266:t 1262:e 1235:t 1225:e 1192:t 1188:y 1158:b 1152:+ 1149:t 1140:a 1134:= 1125:y 1099:, 1090:b 1061:a 1038:e 1011:e 991:b 971:a 947:} 942:t 938:y 934:{ 906:e 886:b 866:a 840:t 836:e 832:+ 829:b 826:+ 823:t 820:a 817:= 812:t 808:y 770:a 741:b 735:+ 732:x 723:a 717:= 708:y 679:b 650:a 627:) 618:b 612:+ 609:t 600:a 594:( 572:t 568:y 555:. 541:2 536:] 531:) 521:b 515:+ 512:t 503:a 496:( 487:t 483:y 478:[ 471:t 437:b 408:a 383:t 379:y 358:t 338:y 259:) 253:( 241:) 235:( 230:) 226:( 212:. 186:) 180:( 175:) 171:( 161:. 131:) 125:( 120:) 116:( 102:. 73:) 69:( 34:. 20:)

Index

Trend estimation
Curve fitting
improve it
talk page
Learn how and when to remove these messages
references
inline citations
improve
introducing
Learn how and when to remove this message
encyclopedic tone
guide to writing better articles
Learn how and when to remove this message
help improve it
make it understandable to non-experts
Learn how and when to remove this message
Learn how and when to remove this message
statistical
data
Data
information
graph
data
data
data
functions
straight line
least-squares
minimizes
errors

Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.

↑