Question

which of these r - values represents the weakest correlation?
a. 0.4
b. 0.2
c. 0.3
d. 0.5

Explanation:

Step1: Understand correlation strength

The closer the absolute - value of the correlation coefficient ($r$) is to 0, the weaker the correlation.

Step2: Compare absolute - values

We need to find the smallest value among 0.4, 0.2, 0.3, and 0.5.
Comparing the values: 0.2 < 0.3 < 0.4 < 0.5.

Answer:

B. 0.2