Plot Power Curve for a Two-Sample t-Test

This function creates a ggplot2 power curve for a two-sample t test.

Usage

ggpower_ttest(d, alpha = 0.05, n_range = seq(10, 100, by = 5),
  tails = "two")

Arguments

d

Numeric. The effect size (Cohen's d).

alpha

Numeric. The significance level (default 0.05).

n_range

Numeric vector. A vector of sample sizes per group (default is seq(10, 100, by = 5)).

tails

Character. "two" or "one".

Value

A ggplot object showing the power curve.

Examples

# Create a power curve for d = 0.5 over a range of sample sizes per group
ggpower_ttest(d = 0.5, alpha = 0.05, n_range = seq(10, 100, by = 5))