dot-pooled_sd: Pooled Standard Deviation for SMD in factorial experiments

In minter: Effect Sizes for Meta-Analysis of Interactions from Factorial Experiments

Pooled Standard Deviation for SMD in factorial experiments

Description

Compute the pooled standard deviation for SMD. It computes the pooled SD for 2 or 4 groups depending on the arguments passed. Simple SMD has only 2 groups, while main and interactions had 4 groups.

Usage

.pooled_sd(
  Ctrl_sd,
  Ctrl_n,
  A_sd,
  A_n,
  B_sd = NULL,
  B_n = NULL,
  AB_n = NULL,
  AB_sd = NULL
)

Arguments

Ctrl_sd	Standard deviation from the control treatment
Ctrl_n	Sample size from the control treatment
A_sd	Standard deviation from the A treatment
A_n	Sample size from the A treatment
B_sd	Standard deviation from the B treatment
B_n	Sample size from the B treatment
AB_n	Sample size from the interaction AxB treatment
AB_sd	Standard deviation from the interaction AxB treatment

References

Morris, W. F., Hufbauer, R. A., Agrawal, A. A., Bever, J. D., Borowicz, V. A., Gilbert, G. S., ... & Vázquez, D. P. (2007). Direct and interactive effects of enemies and mutualists on plant performance: a meta‐analysis. Ecology, 88(4), 1021-1029. https://doi.org/10.1890/06-0442

minter documentation built on May 3, 2026, 5:06 p.m.