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How to Design and Evaluate Research in Education Book Cover
How to Design and Evaluate Research in Education, 5/e
Jack R. Fraenkel, San Francisco State University
Norman E. Wallen, San Francisco State University
Statistics in Perspective

Essay Quiz



1

Is it possible for a study to find a big difference between the means of two groups, yet not have statistical significance? Why or why not?
2

Calculate the effect size (delta) when the mean and standard deviation of the experimental group are 10 and 5, respectively, and the mean and standard deviation of the comparison group are 4 and 3.
3

Describe how the methods of analyses for relating categorical variables within a group differ from those used to compare groups on a categorical variable.








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