In a study of the relationship between geographical mobility (number of times a person has changed residences) and number of friends, Pearson's r is reported as .40. Which of the following would be a correct interpretation?

a. Mobility explains 16% of the variation in number of friends.
b. There is a strong positive relationship between number of friends and mobility.
c. As mobility increases, number of friends decreases.
d. Mobility explains 40% of the variation in number of friends.


ANSWER: d

Sociology

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