Sample Size Calculation for Two Independent Groups: A Useful Rule of Thumb

By J. C. Allen. 2011

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InTRodUCTIon There is a great little book by Gerald van Belle written “for practitioners of statistical science” called Statistical Rules of thumb1. It is a collection of widely applicable simple rules that capture the essence of key statistical concepts. One of the topics addressed is sample size calculation — in particular, the basic problem of calculating a sample size when the aim is to compare means from 2 independent samples.

Subfields: Statistics and Probability

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