Which of the following tests is essentially a comparison of means?
a. Mann-Whitney U
b. Chi-square
c. ANOVA
d. t-test
ANS: D
One of the most common parametric analyses used to test for significant differences between group means of two samples is the t-test. In its calculation, the numerator is the difference scores of the means of the two samples. In addition, the test uses the pooled standard deviation of the two samples as the denominator.
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