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power analysis
power analysis Power analysis is a research-planning method used to estimate one missing part of a statistical test when the others are known or estimated, such as sample size, expected effect size, significance level, or statistical power.
Power analysis is a research-planning method used to estimate one missing part of a statistical test when the others are known or estimated, such as sample size, expected effect size, significance level, or statistical power. In practice, an a priori power analysis is used to estimate how many participants a study is likely to need to have a desired chance of finding a statistically significant effect.