S2fsq: Covert S to Cohen's _f_^2

In RESI: Robust Effect Size Index (RESI) Estimation

Covert S to Cohen's f^2

Description

Converts robust effect size index (S) to Cohen's f^2 (effect size for multiple regression) using the formula from Vandekar, Tao, & Blume (2020).

Usage

S2fsq(S)

Arguments

S	Numeric,the robust effect size index.

Details

The formula for the conversion is:

f^2 = S^2

Value

Returns an estimate of Cohen's f^2 based on the RESI

Examples

# fit a linear regression model with continuous outcome and predictor
mod = lm(charges ~ age, data = RESI::insurance)

# obtain t value for calculating RESI
t = summary(mod)$coefficients[2, "t value"]

# calculate RESI
S = t2S(t, n = 1338, rdf = 1336)

# convert to f^2
S2fsq(S)

RESI documentation built on April 3, 2025, 5:26 p.m.