Which of the following explanations would be consistent with a negative correlation between the number of hours a person sleeps per night and her level of positive mood?
A) The more sleep a person gets,the better her mood.
B) People who are happy are less likely to suffer from insomnia.
C) Stress causes people to sleep less and be in a bad mood.
D) People who are depressed tend to need more sleep than other people.

Question

Quizplus · Accepted Answer

A negative correlation means that as one variable increases, the other decreases. If people who are depressed tend to need more sleep, then as sleep increases, mood decreases, which is consistent with a negative correlation.

Which of the Following Explanations Would Be Consistent with a Negative