Researchers wanted to explore self-esteem in adolescent boys and adolescent girl
ID: 3205378 • Letter: R
Question
Researchers wanted to explore self-esteem in adolescent boys and adolescent girls. They used a 5-point Likert-type self-esteem inventory; 1 = strongly disagree and 5 = strongly agree. What if their results yielded the following: t=1.71, d=.90. What was the purpose of calculating a Cohen's d? When is a Cohen's d calculated? Interpret d=.90. What does it mean in this example? Directions: In an essay of 100-150 words, use the scenario presented in part 1a, above, to thoroughly answer the following questions
Explanation / Answer
Calculating Cohen's d provides useful information for discussion (e.g., allows ready comparison with meta-analyses and the size of effects reported in other studies). Where you are reporting about differences between two means, then a standardised mean effect size (such as d) would be an appropriate accompaniment to inferential testing.chone's d is used to comparison between several means . in ANOVA it is used to compare main affects or interaction effects. cohen's is a value similar to the p-values . in this example An effect size of 0.9 indicates that the mean of the treated group is at the 82 percentile of the untreated group.
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