ses: Standard Effect Size.

In BAT: Biodiversity Assessment Tools

Standard Effect Size.

Description

Calculates the standard effect size from observed and estimated values.

Usage

ses(obs, est, param = TRUE, p = TRUE)

Arguments

obs	A single observed value.
est	A vector with estimated values.
param	Value is calculated with parametric or non-parametric method. Because standardized effect sizes may lead to biased conclusions if null values show an asymmetric distribution or deviate from normality, non-parametric effect sizes use probit transformed p-values (Lhotsky et al., 2016).
p	Boolean indicating whether the p-value should be returned.

Value

The ses value or a vector with ses and p-value.

References

Lhotsky et al. (2016) Changes in assembly rules along a stress gradient from open dry grasslands to wetlands. Journal of Ecology, 104: 507-517.

Examples

est = rnorm(1000, 500, 100)

ses(100, est)
ses(100, est, param = FALSE)
ses(500, est)
ses(500, est, param = FALSE)
ses(900, est, p = TRUE)
ses(900, est, param = FALSE, p = TRUE)

BAT documentation built on May 29, 2024, 7:35 a.m.