Question: The effect size for the data from an independent-measures t test can be measured by r2 , which is the percentage of variance accounted for.

The effect size for the data from an independent-measures t test can be measured by r2

, which is the percentage of variance accounted for. The value for r2 can also be obtained by ____.

a. squaring the Spearman correlation for the same data

b. squaring the point-biserial correlation for the same data

c. squaring the Pearson correlation for the same data

d. None of the other options will produce r2

.

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