Karl Pearson's data on heights of brothers and sisters

Data for Exercise 2.20

Pearson

Format

A data frame/tibble with 11 observations on three variables

family

number indicating family of brother and sister pair

brother

height of brother (in inches)

sister

height of sister (in inches)

Source

Pearson, K. and Lee, A. (1902-3), On the Laws of Inheritance in Man, Biometrika, 2, 357.

References

Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.

Examples

plot(brother ~ sister, data = Pearson, col = "lightblue")

cor(Pearson$brother, Pearson$sister)
#> [1] 0.5580547