Question

Which of these r-values represents the weakest correlation?

–0.9, –0.6, 0.2, 0.7

a. 0.2

b. -0.9

c. -0.6

d. 0.7

Answer 1

0.2

Explanation:

R can be as small as -1 to display a perfect negative linear relationship or as large as 1 to display a perfect positive linear relationship. The closer the r-value is to 0 the weaker the correlation so therefore 0.2 is closest to 0 making it the answer choice with the weakest correlation.