Data for Exercise 2.20
A data frame/tibble with 11 observations on three variables
number indicating family of brother and sister pair
height of brother (in inches)
height of sister (in inches)
Pearson, K. and Lee, A. (1902-3), On the Laws of Inheritance in Man, Biometrika, 2, 357.
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.
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