A researcher finds a positive correlation between the amount of wine people drink and the number of friends they have. Which of the following statements must be true? More than one statement may be true.

Question

A. People who drink more tend, on average, to have more friends.
B. If a person starts drinking more than wine, they are likely to find themselves with more friends.
C. If a person stops drinking wine, they are likely to find themselves with fewer friends.
D. If Anna has more friends then Pierre, she must drink more than Pierre

Answer 1

A. People who drink more tend, on average, to have more friends.

D. If Anna has more friends than Pierre, she must drink more than Pierre.