If one compared an r of .90 and an r of .45 in terms of the magnitude of the relationship expressed, one would say that
A) an r of .90 indicates twice as much relationship as an r of .45.
B) an r of .90 indicates approximately four times as much relationship as an r of .45.
C) an r of .90 indicates a high relationship, while an r of .45 indicates a low relationship.
D) b and c

Question

Quizplus · Accepted Answer

The magnitude of the relationship in correlation coefficients (r) is squared to compare the proportion of variance explained. Squaring .90 gives .81 and squaring .45 gives .2025, which means an r of .90 explains roughly four times as much variance as an r of .45, indicating a stronger relationship. Additionally, an r of .90 is considered high, while an r of .45 is moderate, not low, making both statements in D correct.

If One Compared an R of