The Pearson correlation is calculated for a sample of n = 20 individuals.If a hypothesis test is used to determine whether the correlation is significant,what df value would be used for the t statistic?
A)18
B)19
C)20
D)21

Question

Quizplus · Accepted Answer

The degrees of freedom (df) for a Pearson correlation coefficient test is calculated as n - 2, where n is the sample size. Here, n = 20, so df = 20 - 2 = 18.

The Pearson Correlation Is Calculated for a Sample of N