Question

The correlation coefficient r between a person's age, x, and the number of websites visited per day, y, is 0.562.

What percent of the variation in the number of websites visited cannot be explained by differences in the people's ages?

A. 31.6%
B. 43.8%
C. 56.2%
D. 68.4%

Is it B?

Answer 1

31.6% is an outlier because it is far from the given relationship, hence % of variation in the number of websites visited of 31.6% cannot be explained by the difference in the people's age.