A Pearson correlation is computed for a sample of n = 18 pairs of X and Y values.What correlations are statistically significant with α = .05,two tails?
A)correlations between 0.468 and -0.468
B)correlations greater than or equal to 0.468 and correlation less than or equal to -0.468
C)correlations between 0.456 and -0.456
D)correlations greater than or equal to 0.456 and correlation less than or equal to -0.456

Question

A Pearson correlation is computed for a sample of n = 18 pairs of X and Y values.What correlations are statistically significant with α = .05,two tails?​
A)​correlations between 0.468 and -0.468
B)​correlations greater than or equal to 0.468 and correlation less than or equal to -0.468
C)​correlations between 0.456 and -0.456
D)​correlations greater than or equal to 0.456 and correlation less than or equal to -0.456

Quizplus · Accepted Answer

With a significance level of α=.05 with two tails, the critical values for a Pearson correlation coefficient for n=18 is ±0.468. Therefore, any correlations greater than or equal to 0.468 and correlation less than or equal to -0.468 are statistically significant.

A Pearson Correlation Is Computed for a Sample of N