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111:. He was new to agricultural statistics and devised many new procedures. He recruited Mackenzie as his assistant and in 1922 she contributed to two papers: Fisher and Mackenzie (1922) on the analysis of rainfall correlations using harmonic analysis and Fisher, Thornton and Mackenzie (1922) on the analysis of bacterial counts using the Poisson distribution. Fisher and Mackenzie (1923) with its early presentation of the
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Winifred and Trevor had five children, Michael, Donald, Ursula, Alan and
Phyllis between 1928 and 1937, two born in the Congo and three in England. The BMS scheme for family life was for the parents to stay on station while the children went to boarding school in England but, with the approach of the
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followed. In these early papers
Winifred provided the computing—learning Fisher’s methods by implementing them. By 1924 she was ready to work alone, applying to barley techniques Fisher had devised for wheat. The project was not completed when she left and the work was taken over by
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Winifred was born in London, the fifth of six girls. Her father, Samuel Henry
Mackenzie, had a cutlers and jewellery shop and, before marrying, her mother, Louisa (née Chatterton), had worked in the Civil Service Telegraph Department. Winifred attended the highly regarded
156:. Their work was not wholly religious for the Belgian authorities left medicine and education and even the administration of justice to the missions. Winifred learned the local tribal tongues and worked on educating the women and girls—even setting up
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Second World War, Winifred and Trevor decided that she and the children should settle in
England. Trevor stayed in the Congo until 1952 moving to a ministry in Ludlow, Shropshire. Winifred died in 1954, having been ill for several years.
407:
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Wishart, J. and W. A. Mackenzie (1930) Studies in Crop
Variation VII. The Influence of Rainfall on the Yield of Barley at Rothamsted Journal of Agricultural Science, 20, (3), 417–439.
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Fisher, R. A., H. G. Thornton and W. A. Mackenzie (1922) The
Accuracy of the Plating Method of Estimating the Density of Bacterial Populations, Annals of Applied Biology, 9, 325–359.
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Fisher, R. A. and W. A. Mackenzie (1923) Studies in Crop
Variation. II. The Manurial Response of Different Potato Varieties, Journal of Agricultural Science, 13, (3), 311–320.
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Mackenzie, W. A. (1924) Studies in Crop
Variation. III. An Examination of the Yield of Dressed Grain from Hoos Field, Journal of Agricultural Science, 14, (3), 434–460.
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In 1927 the statistical career of
Winifred Alice Mackenzie ended when she married the missionary Trevor Grahame Rupert Tyrrell (1896–1968). After war service in the
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Mackenzie, W. A. (1926) Note on a
Remarkable Correlation between Grain and Straw, obtained at Rothamsted, Journal of Agricultural Science, 16, (2), 275–279.
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Fisher, R. A. and W. A. Mackenzie (1922) The Correlation of Weekly Rainfall. Quarterly Journal of the Royal Meteorological Society, 48, (July), 234–242.
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78:. In 1921 she published an essay on a favourite Bowley theme, the standard of living of the working classes. For this she was awarded the
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Mackenzie, W. A. (1921) Changes in the Standard of Living in the United Kingdom, 1860–1914, Economica, No. 3 (Oct.), 211–230.
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Hoecker-Drysdale, Susan (2005). "Clara Elizabeth Collet (1860-1948) and the Legacy of Harriet Martineau: An Introduction".
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Taylor, Ursula Winifred; Aldrich, John (2022). "Winifred Mackenzie: Statistician, missionary, mother".
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Memorial Prize. In 1924 she received a Master of Science (Economics) from the LSE.
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22:(21 November 1896 – 29 November 1954) was an English statistician, pupil of
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148:. Winifred joined in this work which was based on the BMS station at
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established forty years earlier by the explorer and missionary
74:(LSE) and studied statistics under the economic statistician
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Baptist missionaries in the Democratic Republic of the Congo
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University of London: the Historical Record (1836-1926)
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Winifred and Trevor Tyrrell arriving at Bolobo in 1927
335:. University of London Press. 1926. p. 269-270.
34:’s first assistant in the Statistics Department at
26:, first winner of the Royal Statistical Society’s
59:whose then headmistress was the mathematician
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267:(online ed.). Oxford University Press.
38:. She was subsequently a missionary in the
99:Winifred Mackenzie computing at Rothamsted
315:Journal of the Royal Statistical Society
264:Oxford Dictionary of National Biography
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140:, Tyrrell was ordained and went to the
348:R. A. Fisher: The Life of a Scientist
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109:Rothamsted Experimental Station
91:Rothamsted Experimental Station
36:Rothamsted Experimental Station
53:North London Collegiate School
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70:In 1916 Winifred went to the
403:English Baptist missionaries
281:UK public library membership
160:units on the English model.
124:Missionary work in the Congo
393:British women statisticians
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146:Baptist Missionary Society
72:London School of Economics
346:Box, Joan Fisher (1978).
67:was an earlier student.
398:Rothamsted statisticians
138:Royal Army Medical Corps
20:Winifred Alice Mackenzie
240:10.1111/1740-9713.01689
273:10.1093/ref:odnb/37237
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388:English statisticians
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296:Sociological Origins
113:analysis of variance
16:English statistician
321:(1): 136–150. 1922.
261:"Bryant , Sophie".
63:. The statistician
30:Memorial Prize and
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357:978-0-471-09300-8
313:"Current Notes".
279:(Subscription or
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234:(5): 35–37.
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228:Significance
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173:Publications
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80:Frances Wood
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65:Clara Collet
57:Frances Buss
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28:Frances Wood
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383:1954 deaths
378:1896 births
302:(2): 95–96.
158:Girl Guides
55:founded by
372:Categories
283:required.)
213:References
46:Early life
350:. Wiley.
248:252533061
144:with the
103:In 1919
118:Wishart
107:joined
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150:Bolobo
86:Career
244:S2CID
352:ISBN
269:doi
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