rescale: Rescale Mean And/Or Standard Deviation of a Vector

In ibawds: Functions and Datasets for the Data Science Course at IBAW

Rescale Mean And/Or Standard Deviation of a Vector

Description

Rescale Mean And/Or Standard Deviation of a Vector

Usage

rescale(x, mu = mean(x), sigma = sd(x))

Arguments

x	numeric vector
mu	numeric value giving the desired mean
sigma	numeric value giving the desired standard deviation

Details

By default, mean and standard deviation are not changed, i.e., rescale(x) is identical to x. Only if a value is specified for mu and/or sigma the mean and/or the standard deviation are rescaled.

Value

a numeric vector with the same length as x with mean mu and standard deviation sigma.

Examples

x <- runif(1000, 5, 8)

# calling rescale without specifying mu and sigma doesn't change anything
all.equal(x, rescale(x))

# change the mean without changing the standard deviation
x1 <- rescale(x, mu = 3)
all.equal(mean(x1), 3)
all.equal(sd(x1), sd(x))

# rescale mean and standard deviation
x2 <- rescale(x, mu = 3, sigma = 2)
all.equal(mean(x2), 3)
all.equal(sd(x2), 2)

ibawds documentation built on June 17, 2022, 9:07 a.m.