The file
http://dananne.org/fu/courses/math-241/R/pearson.txt contains the data from Karl Pearson's study of the heights of 1078 fathers and sons discussed in Section 8.1. The data is in a table, with the first column labeled “Father” and the second column labeled “Son”. Recall: If you use RStudio to directly import this file, change the “Separator” selection from “Tab” to “Whitespace”.