If there is a relationship between amount of coffee consumed daily and number of hours slept, such that people who drink a lot of coffee tend to sleep very little (and people who drink little coffee tend to sleep a lot), what correlation exists between coffee consumption and sleep?

Question

Quizplus · Accepted Answer

A negative correlation exists between coffee consumption and sleep because as the amount of coffee consumed increases, the number of hours slept tends to decrease. This means that there is an inverse relationship between the two variables. As one variable increases, the other tends to decrease.

If There Is a Relationship Between Amount of Coffee Consumed