The problem that makes the inference about correlation coefficients somewhat less straightforward than inference about means is that the sampling distribution of r
A) has an unknown mean
B) has an unknown standard deviation
C) varies in shape according to circumstance
D) is bimodal because r can be negative as well as positive

Question

Quizplus · Accepted Answer

The sampling distribution of the correlation coefficient r is not normally distributed, especially for small sample sizes, and its shape can vary depending on the true population correlation.

The Problem That Makes the Inference About Correlation Coefficients Somewhat