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2634: 85: 64: 184: 174: 153: 1842: 31: 263: 2629:{\displaystyle \underbrace {\overbrace {estimate} ^{data-driven \choose observed}} _{\begin{pmatrix}computed\ value\ (e.g.,\ scalar\ ,\ vector.\ etc.)\\sample\ data\ dependent\\estimator\ dependent\end{pmatrix}}\longleftrightarrow \underbrace {\overbrace {estimator} ^{observable \choose model}} _{\begin{pmatrix}random\ quantity\\''estimating''\ model,\ method,\ or\ recipe\\controls\ estimate's\ distribution\end{pmatrix}}} 307: 1775: 22: 319: 1743:
The succeeding sentence seem to be devoted to showing that a certain statistic is an unbiased estimator of a certain probability of success. Why is that what matters in a section titled "sampling distribution"? It's not telling us anything about a sampling distribution.
1683:) we need to understand the distribution." What is this probability? Obviously the expectation of an estimator depends on its probability distribution. Why are we talking about the "expectation value" anyway? There is no reason what that should be our focus here. 596: 1793:
Under "estimator", the first box looks ok. The "realization" box does not. A realization is what an estimate is, not what as estimator is. And the third box has the same problem: "Special cases"? An estimate, rather than an estimator, is a special case.
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And why does every word except "of" in that last box begin with a capital letter? That's not what is in those other boxes. That is at best substandard. Knowledge generally is fairly sparing in the use of capital letters. See
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An estimate is not the same thing as an estimator: an estimate is a specific value dependent on only the dataset while an estimator is a method for estimation that is realized through random variables.
778:, the expression that is also used in the Unbiased estimation of standard deviation Knowledge page and also is used as an example in the Bias of an estimator Knowledge page. Then indeed we would get 135: 1547: 1473: 942: 240: 664: 1004: 2681: 832: 520: 1047: 1601: 1219: 2671: 1723: 1663: 1387: 1360: 1171: 1112: 1081: 1755:
is an example of a sampling distribution. Does this section even tell us what a sampling distribution is? It appears that whoever wrote it knows nothing about that.
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the value of the parameter. It does not say with certainty what that value is, but the way this is phrased could give the impression that that is what is meant.
1621: 2696: 125: 35: 2711: 230: 2666: 1549:, and this section is about the sampling distribution of the estimator. But it says the sampling distribution "can be shown by the estimator". What?? 343: 2701: 669: 2676: 1669:
is the number of trials." So all estimators count the number of observations equal to 0 and divide by the sample size? Obviously that is false.
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The 2nd paragraph of the subsection titled "Unbiased" is quite confusing. I'm not sure what it's trying to say. It should be rewritten.
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may be useful to construct and insert in the article (mostly to aid learners)... We can probably generate a schematic like this?
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The first two boxes under "estimate" look ok. The third, "Provides 'true' value of the parameter" seems at best misleading. It
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The sampling distribution of the sample variance from a normally distributed population is a scaled chi-square distribution.
1560:". Indeed. The sampling distribution of the estimator is the sampling distribution of the estimator. A tautologous sentence. 44: 1478: 1404: 873: 601: 285: 947: 591:{\displaystyle X={\begin{cases}-1{\text{ w.p. }}{\frac {1}{2}}\\1{\text{ w.p. }}{\frac {1}{2}}\end{cases}}} 276: 781: 1814: 1760: 378: 1695: 1398: 1143: 867: 50: 839: 183: 1825:
I agree, the idea behind this figure is terrific, to visually summarize the duality between a (model)
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is the number of trials. To understand why the expectation value is dependent on the probability (
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on Knowledge. If you would like to participate, please visit the project page, where you can join
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on Knowledge. If you would like to participate, please visit the project page, where you can join
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This article was the subject of a Wiki Education Foundation-supported course assignment, between
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Then "The sampling distribution is equivalent to the probability distribution of the estimator
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values fluctuating between samples estimators can be on target regardless of the differences.
1325:{\displaystyle \operatorname {E} ={\frac {\operatorname {E} }{n}}={\frac {np_{0}}{n}}=p_{0}.} 1114:) we need to understand the distribution. For example, in the sampling distribution for each 287: 262: 2638: 1701: 1641: 1365: 1338: 1226: 1149: 1090: 1059: 1006:
The sampling distribution is equivalent to the probability distribution of the estimator
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Then: "To understand why the expectation value is dependent on the probability (
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One should be able better to define this word without immediately linking it to
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I deleted it for reasons that should be obvious to those who know the subject.
771:{\displaystyle S_{n}^{2}={\frac {1}{n-1}}\sum _{i=1}^{n}(X_{i}-{\bar {X}})^{2}} 393: 179: 97: 1623:
has been defined, and obviously not all estimators are something divided by
510:{\displaystyle S_{n}^{2}={\frac {1}{n-1}}\sum _{i=1}^{n}(X_{i}-X_{n})^{2}} 1173:. Therefore, the sampling distribution S can be seen as the distribution 834:. Does this look correct, and if so is it okay for me to make this edit? 289: 1773: 373::In mathematics designations need to be redefined. This is fine. 2646: 1818: 1764: 1335:
proving that the property holds regardless of what the value of
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either being a success or not it can be thought of as a
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either being a success or not it can be thought of as a
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and follow this statement, then we get a contradiction
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can be thought of as a binomial distribution, or that
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Then: "which can also be represented by the equation
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Wiki Education Foundation-supported course assignment
1475:." What does that mean? Presumably the estimator is 201:, a collaborative effort to improve the coverage of 96:, a collaborative effort to improve the coverage of 2628: 1717: 1657: 1615: 1595: 1541: 1467: 1381: 1354: 1324: 1213: 1165: 1106: 1075: 1041: 998: 936: 826: 770: 666:. I believe this statement should be changed into 658: 590: 509: 2682:Knowledge level-5 vital articles in Mathematics 1010:which can also be represented by the equation: 407:I think the confusion comes from the statement 1542:{\displaystyle S=h(X_{1},X_{2},\ldots ,X_{n})} 1468:{\displaystyle S=h(X_{1},X_{2},\ldots ,X_{n})} 937:{\displaystyle S=h(X_{1},X_{2},\ldots ,X_{n})} 2336: 2280: 1954: 1886: 8: 659:{\displaystyle \mathbb {E} =2=\sigma ^{2}=1} 999:{\displaystyle X_{1},X_{2},\ldots ,X_{n}.} 147: 58: 2348: 2335: 2279: 2277: 2241: 2238: 1966: 1953: 1885: 1883: 1850: 1847: 1844: 1709: 1703: 1649: 1643: 1608: 1580: 1572: 1530: 1511: 1498: 1480: 1456: 1437: 1424: 1406: 1373: 1367: 1346: 1340: 1313: 1294: 1284: 1257: 1237: 1202: 1178: 1157: 1151: 1098: 1092: 1067: 1061: 1026: 1018: 987: 968: 955: 949: 925: 906: 893: 875: 818: 802: 797: 786: 785: 783: 762: 747: 746: 737: 724: 713: 691: 682: 677: 671: 644: 622: 617: 606: 605: 603: 571: 566: 549: 544: 530: 522: 501: 491: 478: 465: 454: 432: 423: 418: 412: 344:Template:Dashboard.wikiedu.org assignment 827:{\displaystyle \mathbb {E} =\sigma ^{2}} 2672:Knowledge vital articles in Mathematics 342:Above undated message substituted from 149: 60: 19: 2687:C-Class vital articles in Mathematics 7: 1397:Start with the first sentence: "The 1122:it can be considered a success when 944:. represented by the random sample : 195:This article is within the scope of 90:This article is within the scope of 2697:High-importance Statistics articles 49:It is of interest to the following 2284: 1890: 1260: 1239: 315: 311: 14: 2712:Mid-priority mathematics articles 1042:{\displaystyle S={\frac {Y}{n}}.} 215:Knowledge:WikiProject Mathematics 2667:Knowledge level-5 vital articles 318:. Further details are available 305: 261: 218:Template:WikiProject Mathematics 182: 172: 151: 110:Knowledge:WikiProject Statistics 83: 62: 29: 20: 2702:WikiProject Statistics articles 235:This article has been rated as 130:This article has been rated as 113:Template:WikiProject Statistics 2677:C-Class level-5 vital articles 2234: 2097: 2017: 1596:{\textstyle S={\frac {Y}{n}}.} 1536: 1491: 1462: 1417: 1401:can be shown by the estimator 1272: 1266: 1251: 1245: 1208: 1189: 931: 886: 870:can be shown by the estimator 858:I found this section, labeled 808: 790: 759: 752: 730: 628: 610: 498: 471: 362:near-circularity of definition 1: 388:Unbiased section is confusing 209:and see a list of open tasks. 104:and see a list of open tasks. 2707:C-Class mathematics articles 1603:" What? No statistic called 1362:is. This shows that despite 1214:{\displaystyle Bin(n,p_{0})} 1138:trials. With the concept of 356:20:52, 16 January 2022 (UTC) 2692:C-Class Statistics articles 1690:Then: "With the concept of 1130:is equal to the success of 2728: 2647:18:56, 1 August 2024 (UTC) 1835:estimate-estimator duality 1698:with constant probability 1146:with constant probability 844:23:48, 6 August 2024 (UTC) 383:19:14, 6 August 2018 (UTC) 1819:21:49, 20 July 2024 (UTC) 1770:Estimate versus estimator 1765:21:35, 20 July 2024 (UTC) 1736:a binomial distribution? 517:. Indeed, if we consider 402:04:05, 6 April 2024 (UTC) 234: 167: 129: 78: 57: 850:I deleted the erroneous 241:project's priority scale 198:WikiProject Mathematics 2662:C-Class vital articles 2630: 1779: 1719: 1659: 1617: 1597: 1543: 1469: 1391: 1383: 1356: 1326: 1215: 1167: 1118:in the random dataset 1108: 1077: 1043: 1000: 938: 828: 772: 729: 660: 592: 511: 470: 93:WikiProject Statistics 2631: 1777: 1720: 1718:{\displaystyle p_{0}} 1696:binomial distribution 1660: 1658:{\displaystyle X_{i}} 1618: 1598: 1544: 1470: 1399:sampling distribution 1384: 1382:{\displaystyle p_{0}} 1357: 1355:{\displaystyle p_{0}} 1327: 1216: 1168: 1166:{\displaystyle p_{0}} 1144:binomial distribution 1109: 1107:{\displaystyle p_{0}} 1078: 1076:{\displaystyle X_{i}} 1044: 1001: 939: 868:sampling distribution 864: 860:Sampling Distribution 852:Sampling Distribution 829: 773: 709: 661: 593: 512: 450: 322:. Student editor(s): 36:level-5 vital article 1843: 1829:and a (data-driven) 1702: 1642: 1607: 1571: 1479: 1405: 1366: 1339: 1236: 1177: 1150: 1091: 1060: 1017: 948: 874: 782: 670: 602: 521: 411: 221:mathematics articles 807: 687: 627: 428: 116:Statistics articles 2626: 2625: 2619: 2346: 2233: 2227: 1964: 1780: 1715: 1665:equal to zero and 1655: 1613: 1593: 1539: 1465: 1379: 1352: 1322: 1211: 1163: 1104: 1083:equal to zero and 1073: 1039: 996: 934: 824: 793: 768: 673: 656: 613: 588: 583: 507: 414: 326:. Peer reviewers: 320:on the course page 190:Mathematics portal 45:content assessment 2580: 2546: 2498: 2490: 2467: 2447: 2375: 2342: 2334: 2275: 2239: 2237: 2197: 2137: 2123: 2084: 2061: 2056: 2036: 2016: 1999: 1960: 1952: 1881: 1848: 1846: 1638:is the number of 1588: 1304: 1279: 1056:is the number of 1034: 755: 707: 579: 569: 557: 547: 448: 298: 297: 255: 254: 251: 250: 247: 246: 146: 145: 142: 141: 2719: 2635: 2633: 2632: 2627: 2624: 2623: 2579: 2575: 2545: 2497: 2489: 2466: 2446: 2445: 2410: 2374: 2347: 2341: 2340: 2339: 2333: 2316: 2283: 2276: 2271: 2242: 2240: 2232: 2231: 2196: 2136: 2122: 2083: 2060: 2055: 2035: 2015: 1998: 1965: 1959: 1958: 1957: 1951: 1925: 1889: 1882: 1877: 1851: 1849: 1724: 1722: 1721: 1716: 1714: 1713: 1664: 1662: 1661: 1656: 1654: 1653: 1622: 1620: 1619: 1614: 1602: 1600: 1599: 1594: 1589: 1581: 1548: 1546: 1545: 1540: 1535: 1534: 1516: 1515: 1503: 1502: 1474: 1472: 1471: 1466: 1461: 1460: 1442: 1441: 1429: 1428: 1388: 1386: 1385: 1380: 1378: 1377: 1361: 1359: 1358: 1353: 1351: 1350: 1331: 1329: 1328: 1323: 1318: 1317: 1305: 1300: 1299: 1298: 1285: 1280: 1275: 1258: 1220: 1218: 1217: 1212: 1207: 1206: 1172: 1170: 1169: 1164: 1162: 1161: 1126:= 0. This makes 1113: 1111: 1110: 1105: 1103: 1102: 1082: 1080: 1079: 1074: 1072: 1071: 1048: 1046: 1045: 1040: 1035: 1027: 1005: 1003: 1002: 997: 992: 991: 973: 972: 960: 959: 943: 941: 940: 935: 930: 929: 911: 910: 898: 897: 833: 831: 830: 825: 823: 822: 806: 801: 789: 777: 775: 774: 769: 767: 766: 757: 756: 748: 742: 741: 728: 723: 708: 706: 692: 686: 681: 665: 663: 662: 657: 649: 648: 626: 621: 609: 597: 595: 594: 589: 587: 586: 580: 572: 570: 567: 558: 550: 548: 545: 516: 514: 513: 508: 506: 505: 496: 495: 483: 482: 469: 464: 449: 447: 433: 427: 422: 358: 317: 316:19 December 2021 313: 309: 293: 265: 257: 223: 222: 219: 216: 213: 192: 187: 186: 176: 169: 168: 163: 155: 148: 136:importance scale 118: 117: 114: 111: 108: 87: 80: 79: 74: 66: 59: 42: 33: 32: 25: 24: 16: 2727: 2726: 2722: 2721: 2720: 2718: 2717: 2716: 2652: 2651: 2618: 2617: 2568: 2518: 2517: 2438: 2404: 2401: 2400: 2349: 2317: 2285: 2278: 2243: 2226: 2225: 2166: 2165: 2101: 2100: 1967: 1926: 1891: 1884: 1852: 1841: 1840: 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2214:d 2211:n 2208:e 2205:p 2202:e 2199:d 2194:r 2191:o 2188:t 2185:a 2182:m 2179:i 2176:t 2173:s 2170:e 2163:t 2160:n 2157:e 2154:d 2151:n 2148:e 2145:p 2142:e 2139:d 2134:a 2131:t 2128:a 2125:d 2120:e 2117:l 2114:p 2111:m 2108:a 2105:s 2098:) 2095:. 2092:c 2089:t 2086:e 2081:. 2078:r 2075:o 2072:t 2069:c 2066:e 2063:v 2058:, 2053:r 2050:a 2047:l 2044:a 2041:c 2038:s 2033:, 2030:. 2027:g 2024:. 2021:e 2018:( 2013:e 2010:u 2007:l 2004:a 2001:v 1996:d 1993:e 1990:t 1987:u 1984:p 1981:m 1978:o 1975:c 1969:( 1955:) 1949:d 1946:e 1943:v 1940:r 1937:e 1934:s 1931:b 1928:o 1923:n 1920:e 1917:v 1914:i 1911:r 1908:d 1902:a 1899:t 1896:a 1893:d 1887:( 1875:e 1872:t 1869:a 1866:m 1863:i 1860:t 1857:s 1854:e 1813:( 1759:( 1731:Y 1727:Y 1711:0 1707:p 1692:Y 1681:0 1678:p 1667:n 1651:i 1647:X 1636:Y 1625:n 1611:Y 1591:. 1586:n 1583:Y 1578:= 1575:S 1558:S 1537:) 1532:n 1528:X 1524:, 1518:, 1513:2 1509:X 1505:, 1500:1 1496:X 1492:( 1489:h 1486:= 1483:S 1463:) 1458:n 1454:X 1450:, 1444:, 1439:2 1435:X 1431:, 1426:1 1422:X 1418:( 1415:h 1412:= 1409:S 1375:0 1371:p 1348:0 1344:p 1320:. 1315:0 1311:p 1307:= 1302:n 1296:0 1292:p 1288:n 1282:= 1277:n 1273:] 1270:Y 1267:[ 1261:E 1255:= 1252:] 1249:S 1246:[ 1240:E 1223:S 1209:) 1204:0 1200:p 1196:, 1193:n 1190:( 1187:n 1184:i 1181:B 1159:0 1155:p 1140:Y 1136:n 1132:X 1128:Y 1124:X 1120:X 1116:i 1100:0 1096:p 1085:n 1069:i 1065:X 1054:Y 1037:. 1032:n 1029:Y 1024:= 1021:S 1008:S 994:. 989:n 985:X 981:, 975:, 970:2 966:X 962:, 957:1 953:X 932:) 927:n 923:X 919:, 913:, 908:2 904:X 900:, 895:1 891:X 887:( 884:h 881:= 878:S 838:( 820:2 812:= 809:] 804:2 799:n 795:S 791:[ 787:E 764:2 760:) 750:X 739:i 735:X 731:( 726:n 721:1 718:= 715:i 704:1 698:n 694:1 689:= 684:2 679:n 675:S 654:1 651:= 646:2 638:= 635:2 632:= 629:] 624:2 619:2 615:S 611:[ 607:E 577:2 574:1 564:1 555:2 552:1 542:1 533:{ 528:= 525:X 503:2 499:) 493:n 489:X 480:i 476:X 472:( 467:n 462:1 459:= 456:i 445:1 439:n 435:1 430:= 425:2 420:n 416:S 396:( 377:( 350:( 277:1 243:. 138:. 53::

Index


level-5 vital article
content assessment
WikiProjects
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Statistics
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WikiProject Statistics
statistics
the discussion
High
importance scale
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Mathematics
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icon
Mathematics portal
WikiProject Mathematics
mathematics
the discussion
Mid
project's priority scale

1

on the course page
Ziyanggod
Yungam99
GeorgePan1012
Jiang1725

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