Question

Which of these is not a possible r-value?

–0.90, –0.67, 0.20, 1.75


a. 1.75

b. -0.90

c. -0.67

d. 0.20

Answer 1

a. 1.75

Explanation:

r values, or the correlation coefficient must be between -1 and 1, inclusive

-1 is a perfect negative correlation

0 is no correlation

+1 is a perfect positive correlation

1.75 is not between -1 and 1