A random sample of n = 25 scores is obtained from a population with a mean of
Question:
a. Assuming that the sample standard deviation is s = 6 compute r2 and the estimated Cohen's d to measure the size of the treatment effect.
b. Assuming that the sample standard deviation is s = 15, compute r2 and the estimated Cohen's d to measure the size of the treatment effect.
c. Comparing your answers from parts a and b, how does the variability of the scores in the sample influence the measures of effect size?
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a Cohens d 36 050 With s 6 the estimated standard error ...View the full answer
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Related Book For 
Statistics For The Behavioral Sciences
ISBN: 9781111830991
9th Edition
Authors: Frederick J Gravetter, Larry B. Wallnau
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