see.power: Interactive depiction of type I and type II error and power

In asbio: A Collection of Statistical Tools for Biologists

Interactive depiction of type I and type II error and power

Description

Provides an interactive pedagogical display of power.

Usage

see.power(alpha = NULL, sigma = NULL, n = NULL, effect = NULL,
test = "lower", xlim = c(-3, 3), strict = FALSE)

see.power.tck()

Arguments

alpha	Type I error.
sigma	Standard deviation of underlying population.
n	sample size
effect	Effect size
test	Type of test, one of c("lower","upper","two").
xlim	X-axis limits
strict	Causes the function to use a strict interpretation of power in a two-sided test. If strict = TRUE then power for a two sided test will include the probability of rejection in the opposite tail of the true effect. If strict = FALSE (the default) power will be half the value of \alpha if the true effect size is zero.

Details

The function see.power provides an interactive display of power. The function see.power.tck provides a tcltk GUI to manipulate see.power

Author(s)

Ken Aho

asbio documentation built on May 29, 2024, 5:57 a.m.