Sample size calculator

Linear regression, ANOVA (F distribution)

Video Statistical Power Information Power Calculators Regression Sample Size
tails:
distribution:

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Power analysis for the entire model

Information

Calculates the sample size basted on the number of predictors and draw a power analysis chart. Use this test for one of the following tests:
Simple Linear Regression
Multiple Linear Regression
One Way ANOVA

f2 =R2  ,   R2 =f2
1 - R21 + f2

Example:
Linear regression with 4 predictors, α=0.05, power=0.8.
A sample of 85 will identify model with R2=0.13. (or f=0.3873 or f2=0.15)
i.e. the power of a model with a smaller R2 will be lower than 0.8 .

Distribution

distribution right tailed

R Code

The following R code should produce the same results