The Effect Size for the Data from an Independent-Measures T

question 39

Multiple Choice

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.Which of the following also produces the value for r²?

• 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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