# MeanSE: Standard Error of Mean In DescTools: Tools for Descriptive Statistics

## Description

Calculates the standard error of mean.

## Usage

 1 MeanSE(x, sd = NULL, na.rm = FALSE) 

## Arguments

 x a (non-empty) numeric vector of data values. sd the standard deviation of x. If provided it's interpreted as sd of the population. If left to NULL (default) the sample sd(x) will be used. na.rm logical. Should missing values be removed? Defaults to FALSE.

## Details

MeanSE calculates the standard error of the mean defined as:

\frac{σ}{√{n}}

σ being standard deviation of x and n the length of x.

## Value

the standard error as numeric value.

## Author(s)

Andri Signorell <andri@signorell.net>

MeanCI

## Examples

 1 2 3 4 5 6 data(d.pizza) MeanSE(d.pizza\$price, na.rm=TRUE) # evaluate data.frame sapply(d.pizza[,1:4], MeanSE, na.rm=TRUE) 

### Example output

 0.6252242
index        date        week     weekday
10.04158022  0.26218843  0.03873807  0.05886462


DescTools documentation built on June 17, 2021, 5:12 p.m.