pwr.prop.test.contour: Plot a Power Contour for a proportion test

In mathesong/pwrcontour: Power Contours And Tables For Different Hypothetical Effect Sizes

Description

Plot a contour of sample size, effect size and power for proportion test comparisons in the style of Richard Morey's jpower JAMOVI module.

Usage

pwr.prop.test.contour(
  nmin,
  nmax,
  propmin,
  propmax,
  propcomp = 0.5,
  sig.level = 0.05,
  type = c("two.sample", "one.sample"),
  alternative = c("two.sided", "less", "greater"),
  pwrbands = c(0.5, 0.8, 0.95),
  alpha = 0.6
)

Arguments

nmin	Minimum sample size for the plot.
nmax	Maximum sample size for the plot.
propmin	Minimum proportion for the plot.
propmax	Maximum proportion for the plot.
propcomp	Comparison proportion value against which the measured proportion is compared.
sig.level	Significance level, or alpha. Defaults to 0.05.
type	The proportion test type. The default is "two.sample", but another option is "one.sample".
alternative	The alternative hypothesis. The default is "two.sided", but other options are "less" or "greater".
pwrbands	Additional black power bands to display on the figure to emphasise certain power levels. Defaults to c(0.5, 0.8, 0.95).
alpha	The transparency of the contours, in order to show grid lines below.

Value

A ggplot2 object.

Author(s)

Granville J Matheson, [e-mail]

Examples

pwr.prop.test.contour(5, 100, 0.1, 0.9)

mathesong/pwrcontour documentation built on Jan. 1, 2021, 9:19 a.m.