This tutorial is intended to teach students how power in a one-sample Z-test is influenced by effect size, variability (population standard deviation), sample size, and significance level. WISE Power...
"Power tends to corrupt, and absolute power corrupts absolutely." is a famous quote of English historian Sir John Dalberg-Acton (1834 - 1902). Of course, Lord Acton was not referring to...
This group activity illustrates the concepts of size and power of a test through simulation. Students simulate binomial data by repeatedly rolling a ten-sided die, and they use their simulated data...
This article describes an interactive activity illustrating general properties of hypothesis testing and hypothesis tests for proportions. Students generate, collect, and analyze data. Through...
This site defines power and explains what factors may affect it, such as significance level, sample size and variance.
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