effectsize: sd_pooled – R documentation

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sd_pooled

Pooled Standard Deviation

Description

The Pooled Standard Deviation is a weighted average of standard deviations for two or more groups, with more "weight" given to larger sample sizes.

Usage

sd_pooled(x, y = NULL, data = NULL, verbose = TRUE)

mad_pooled(x, y = NULL, data = NULL, verbose = TRUE)

Arguments

`x`	A formula, a numeric vector, or a character name of one in `data`.
`y`	A numeric vector, a grouping (character / factor) vector, a or a character name of one in `data`. Ignored if `x` is a formula.
`data`	An optional data frame containing the variables.
`verbose`	Toggle warnings and messages on or off.

Value

Numeric, the pooled standard deviation.

Examples

sd_pooled(mpg ~ am, data = mtcars)

effectsize

Indices of Effect Size and Standardized Parameters

v0.4.4-1

GPL-3

Authors

Mattan S. Ben-Shachar [aut, cre] (<https://orcid.org/0000-0002-4287-4801>), Dominique Makowski [aut] (<https://orcid.org/0000-0001-5375-9967>), Daniel Lüdecke [aut] (<https://orcid.org/0000-0002-8895-3206>), Indrajeet Patil [ctb] (<https://orcid.org/0000-0003-1995-6531>, @patilindrajeets), Ken Kelley [ctb], David Stanley [ctb]

Initial release