Statistical power calculator

χ² Distribution

one varaince test tutorial


distribution right tailed

Power calculation

Calculate the test power basted on the sample size and draw a power analysis chart.

Use this test for one of the following tests:
Chi-Squared Test For Goodness Of Fit

Statistic Data

Digits:example digits=2: (0.001234 => 0.0012)
α:significant level (0-1), maximum chance allowed rejecting H0 while H0 is correct (Type1 Error)
Effect size(w):0.1 small, 0.3 medium, 0.5 large
Df:degrees of freedom
n:Group1 sample size

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