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A sample of 10 students takes a test first online and then on paper. A researcher...

A sample of 10 students takes a test first online and then on paper. A researcher compares students’ performance when a test is given online and performance when the test is on paper. The analysis shows the following data:  = 1.7; sD = 1.49; t = 3.61. What is the effect size of the difference as measured by Cohen’s d?

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Answer #1

Cohen’s d

=1.14

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