Two samples,each with n = 9 scores,produce an independent-measures t statistic of t = 2.00.If the effect size is measured using r²,what is the value of r²?
A)4/16
B)4/20
C)2/16
D)2/18

Name: Two samples,each with n = 9 scores,produce an independent-measures t statistic of t = 2.00.If the effect size is measured using r²,what is the value of r²? A)4/16 B)4/20 C)2/16 D)2/18
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Quizplus · Accepted Answer

The formula for r² is t² / (t² + df), where df = n1 + n2 - 2. Here, df = 9 + 9 - 2 = 16. So, r² = 2² / (2² + 16) = 4 / 20.

Two Samples,each with N = 9 Scores,produce an Independent-Measures T