Power analysis is an essential tool for determining whether a statistically significant result can be expected in a scientific experiment prior to the experiment being performed. This comprehensive, accessible book provides practicing researchers with step-by-step instructions for conducting power/sample size analyses, assuming only basic prior knowledge of summary statistics and normal distribution. It contains a unified approach to statistical power analysis, with numerous easy-to-use tables that make further calculations or statistical expertise unnecessary.

功率分析是确定在进行科学实验之前，是否可以在科学实验中预期统计显著结果的基本工具。这本综合性的、易于阅读的书为实践研究人员提供了进行功率/样本量分析的分步说明，假设他们只具备汇总统计和正态分布的基本先验知识。它包含统计功效分析的统一方法，有许多易于使用的表格，不需要进一步的计算或统计专业知识。