Chapter 11.3, Problem 2LCA

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8th Edition

Frederick J Gravetter + 1 other

ISBN: 9781133956570

Textbook Problem

Compute the effect size using both Cohen’s *d* and *r ^{2}* acupuncture study previous question.

To determine

**To find:** Cohen’s d and

Explanation

**Given info:**

A sample of 4 individuals is selected from a population. The sample mean and sum of squared difference (SS) is found to be 4.5 and 27 respectively. Value of s equals 3 and

**Calculations:**

Formula for Cohen’s d is:

Substitute 4.5 for

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