Conversion from Cohen's f to Eta-squared

Helper function to convert between Cohen's f and Eta-squared.

f.to.etasq(f, verbose = TRUE)

etasq.to.f(eta.squared, verbose = TRUE)

Arguments

f

Cohen's f.

eta.squared

(Partial) Eta-squared.

verbose

logical; whether the output should be printed on the console. TRUE by default.

Value

f

Cohen's f.

eta.squared

(Partial) Eta-squared.

References

Cohen, J. (1988). Statistical power analysis for the behavioral sciences (2nd ed.). Lawrence Erlbaum Associates.

Examples

f.to.etasq(f = 0.10) # small
#> eta.squared   f.squared           f 
#>  0.00990099  0.01000000  0.10000000 
f.to.etasq(f = 0.25) # medium
#> eta.squared   f.squared           f 
#>  0.05882353  0.06250000  0.25000000 
f.to.etasq(f = 0.40) # large
#> eta.squared   f.squared           f 
#>    0.137931    0.160000    0.400000