E23 A researcher wants to investigate the relationship betwe

E#23

A researcher wants to investigate the relationship between the number of years of formal education a person has and their vocabulary, as measured by a test of word knowledge. Using the General Social Survey data set, he creates the following scatter plot: Which of the following would be the most likely value of the correlation coefficient, r, if one were to calculate it for this data?

Solution

r = 0.70