Suppose that we find that student grades and time spent at parties move in opposite directions. A graph of the relationship between these two variables would curve
A) upward and may be linear or nonlinear.
B) downward and be linear.
C) downward and may be linear or nonlinear.
D) upward and be linear.

Question

Quizplus · Accepted Answer

Since the two variables (student grades and time spent at parties) are moving in opposite directions, we can expect to see a negative correlation. This means that the graph of the relationship between these variables would curve downward. However, it is possible that the curve could be nonlinear, so we cannot rule out the possibility of a curved (i.e. nonlinear) relationship. Therefore, option C (downward and may be linear or nonlinear) is the best choice.

Suppose That We Find That Student Grades and Time Spent