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In 1885, Francis Edgeworth published a paper, On methods of ascertaining variations in the rate of births, deaths and marriages. It contained among the first examples of two-way tables, analyzed to show variation among row and column factors, in a way that Fisher would later formulate as the Analysis of Variance.

Although the data are rates per 1000, they provide a good example of a two-way ANOVA with n=1 per cell, where an additive model fits reasonably well.

Treated as frequencies, the data is also a good example of a case where the independence model fits reasonably well.

Variables:

A data frame with 42 observations on the following 4 variables.

County

a factor with levels Berks Herts Bucks Oxford Bedford Cambridge

year

an ordered factor with levels 1876 < 1877 < 1878 < 1879 < 1880 < 1881 < 1882

Freq

a numeric vector, death rate per 1000 population

Details

Edgeworth's data came from the Registrar General's report for the final year, 1883. The Freq variable represents death rates per 1000 population in the six counties listed.

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Source

The data were scanned from Table 5.2 in Stigler, S. M. (1999) Statistics on the Table: The History of Statistical Concepts and Methods, Harvard University Press.

References

Edgeworth, F. Y. (1885). On Methods of Ascertaining Variations in the Rate of Births, Deaths, and Marriages. Journal of the Statistical Society of London, 48(4), 628-649. doi:10.2307/2979201

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