Any Pearson r which is significant at an alpha of .01, must also
A) be significant at .001
B) be significant at .05
C) be significant at any alpha level
D) be positive

Question

Quizplus · Accepted Answer

If a Pearson r is significant at an alpha level of .01, it means that the probability of observing the data, or something more extreme, if the null hypothesis were true, is less than 1%. Since an alpha level of .05 is less stringent (i.e., allows for a higher probability of observing the data under the null hypothesis), any result that is significant at .01 would also be significant at .05. Higher alpha levels (e.g., .05) require less evidence against the null hypothesis to reject it compared to lower alpha levels (e.g., .01).

Any Pearson R Which Is Significant at an Alpha of .01