In testing the hypothesis that the correlation parameter is zero, the critical value of r decreases as sample size
A) increases.
B) decreases.
C) remains constant.

Question

Quizplus · Accepted Answer

As the sample size increases, the sample correlation becomes more reliable and the standard error of the estimate decreases. Therefore, a smaller correlation coefficient is needed to reject the null hypothesis of zero correlation. This leads to a decrease in the critical value of r as the sample size increases.

In Testing the Hypothesis That the Correlation Parameter Is Zero