Chi-squared sample size calculator

Video Guide Statistical Power Information Sample Size Calculators χ2 Power Calcualtor

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Power analysis for the entire model

Information

Calculate the sample size to gain the required test power and draw a power analysis chart. Use this calculator for one of the following tests:
Goodness of fit test calculator
Degrees of freedom - the number of categories minus one.
Sample size - the total number of observations across the categories.
Chi-Squared test For variance calculator
Degrees of freedom - the total number of observations minus one.
Sample size - the total number of observations.

χ² Distribution

chi-squared distribution left tailed chi-squared distribution two tailed chi-squared distribution right tailed

R Code

The following R code should produce the same results