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.
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A condensed version of power analysis. Critical effect size, power and sample size. Sort of boring mathematics although four master tables are provided.For more detailed one, turn to Jacob Cohen.
评分A condensed version of power analysis. Critical effect size, power and sample size. Sort of boring mathematics although four master tables are provided.For more detailed one, turn to Jacob Cohen.
评分A condensed version of power analysis. Critical effect size, power and sample size. Sort of boring mathematics although four master tables are provided.For more detailed one, turn to Jacob Cohen.
评分A condensed version of power analysis. Critical effect size, power and sample size. Sort of boring mathematics although four master tables are provided.For more detailed one, turn to Jacob Cohen.
评分A condensed version of power analysis. Critical effect size, power and sample size. Sort of boring mathematics although four master tables are provided.For more detailed one, turn to Jacob Cohen.
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