The direction of a relationship between variables can be detected on a scatterplot by considering the angle of the regression line. The relationship is________.
A) positive when the line slopes upward from left to right.
B) positive when the line slopes downward from left to right.
C) negative when the line slopes upward from left to right.
D) negative when the line slopes downward from right to left.

Question

Quizplus · Accepted Answer

The direction of the relationship can be detected by examining the slope of the regression line. A positive slope (sloping upward from left to right) indicates a positive relationship, meaning that as one variable increases, the other variable also tends to increase.

The Direction of a Relationship Between Variables Can Be Detected