The denominator of the test statistic for a related-samples t test
A) compares mean differences observed to the mean differences stated in a null hypothesis.
B) is the sum of the difference scores for each participant.
C) provides an estimate of the error associated with the original scores.
D) provides an estimate of the error associated with the difference scores.

Question

Quizplus · Accepted Answer

The denominator of the test statistic for a related-samples t test provides an estimate of the error associated with the difference scores. This error is calculated by taking the square root of the variance of the difference scores, which estimates the standard error of the mean difference.

The Denominator of the Test Statistic for a Related-Samples T