Question

Which of the following values of r

indicates the most accurate prediction of
one variable from another?
A. r= 1.18
B.
r=-.77
C. r= .68
D. r=.5

Answer 1

B) r=-0.77

Explanation:

Recall that r can only be between -1 and 1, so you cannot choose A

B is closest to -1, so it represents a strong negative correlation between two variables

C is not as close to 1 as B is to -1, so C is out

D is furthest away from 1, so D is out.