Function reference • InteractionPoweR

2-way power analysis

Functions to run a 2-way power analysis

power_interaction(): Power analysis for interactions

power_interaction_r2(): Analytic power analysis for interactions

generate.interaction.cov.input(): Creates the input to power_interaction_r2_covs()

power_interaction_r2_covs(): Analytic interaction power analysis with covariates

3-way power analysis

Functions to run a 3-way power analysis

power_interaction_3way_r2(): Analytic power analysis for 3-way interactions

Next steps

Interpret and visualize power analysis results

power_estimate(): Power estimate

plot_power_curve(): Plot power curve

plot_simple_slope(): Simple slope plot

cor.mat.3way(): See the correlation matrix for a 3-way interaction

simple.slopes.3way(): See the simple slopes for a 3-way interaction

A single data set

Simulate and plot a single data set

generate_interaction(): Generate interaction data set

plot_interaction(): Plot interaction

test_interaction(): Test interaction

Internal functions

Internal functions that support the package

compute_adjustment(): compute_adjustment

name_key: Name key for plotting

norm2ordinal(): norm2ordinal