sample.sd {LearningStats}

Sample Standard Deviation

Description

sample.sd computes the sample standard deviation of a sample x.

Usage

sample.sd(x)

Arguments

x

a numeric vector containing the sample.

Details

Given \{x_1,\ldots,x_n\} a sample of a random variable, the sample standard deviation can be computed as S=\sqrt{\frac{1}{n}\sum_{i=1}^n (x_i-\bar{x})^2}.

Value

A single numerical value corresponding with the sample standard deviation.

Examples

x=rnorm(20)
sample.sd(x)