Exhibit 14-2
You are given the following information about y and x.
-Refer to Exhibit 14-2. The sample correlation coefficient equals
A)0
B)+1
C)-1
D)-0.5

Question

Exhibit 14-2
You are given the following information about y and x. 
-Refer to Exhibit 14-2. The sample correlation coefficient equals
A)0 
B)+1 
C)-1 
D)-0.5

Quizplus · Accepted Answer

The sample correlation coefficient (r) measures the linear relationship between two variables. When r = +1, there is a perfect positive linear relationship (as one variable increases, so does the other). When r = -1, there is a perfect negative linear relationship (as one variable increases, the other decreases). When r = 0, there is no linear relationship between the variables. In this case, the scatterplot shows a strong negative linear relationship between x and y, so the best choice is C (-1).

Exhibit 14-2 You Are Given the Following Information About Y and X