rbeta_rs2: Random Variable From a Beta Distribution (User Range)

In power4mome: Power Analysis for Moderation and Mediation

Random Variable From a Beta Distribution (User Range)

Description

Generate random numbers from a beta distribution, rescaled to have user-specified population mean and standard deviation, and within a specific range.

Usage

rbeta_rs2(n = 10, bmean, bsd, blow = 0, bhigh = 1)

Arguments

n	The number of random numbers to generate.
bmean	The population mean.
bsd	The population standard deviation. If bsd is zero or negative, all random numbers will be equal to bmean.
blow	The lower bound of the target range.
bhigh	The upper bound of the target range.

Details

First, specify the two parameters, shape1 and shape2, and the desired population mean and standard deviation. The random numbers, drawn from a beta distribution by stats::rbeta() will then be rescaled to the desired population range.

Value

A vector of the generated random numbers.

Examples

set.seed(90870962)
x <- rbeta_rs2(n = 5000,
               bmean = .80,
               bsd = .10,
               blow = .00,
               bhigh = .95)
mean(x)
sd(x)
hist(x)
y <- rbeta_rs2(n = 5000,
               bmean = 4,
               bsd = 3,
               blow = -10,
               bhigh = 10)
mean(y)
sd(y)
hist(y)

power4mome documentation built on Sept. 9, 2025, 5:35 p.m.