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How Many Subjects?: Statistical Power Analysis in Research
by: Helena Chmura Kraemer - Sue Thiemann
0803929498 / 9780803929494

Book Description:
How Many Subjects? is a practical guide to sample size calculations and general principles of cost-effective research. It introduces a simple technique of statistical power analysis which allows researchers to compute approximate sample sizes and power for a wide variety of research designs. Because the same technique is used with only slight modifications for different statistical tests, researchers can easily compare the sample sizes required by different designs and tests to make cost-effective decisions in planning a study. These comparisons, emphasized throughout the book, demonstrate important principles of design, measurement and analysis that are rarely discussed in courses or textbooks.

How Many Subjects?: Statistical Power Analysis in Research

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