Suppose that students who work more hours at their jobs tend to have lower grade point averages, and also tend to get less sleep. What would the correlation coefficient be if we were to correlate the two variables of grade point average and number of hours of sleep?

Question

Quizplus · Accepted Answer

The correlation coefficient would be greater than 0, but less than 1 because the two variables are positively correlated. This means that as the number of hours of sleep increases, the grade point average also tends to increase. However, the correlation is not perfect, so there is still some variability in the data.

Suppose That Students Who Work More Hours at Their Jobs