R: Standard Error of Mean

MeanSE {DescTools} | R Documentation

## Standard Error of Mean

### Description

Calculates the standard error of mean.

### Usage

    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>

### See Also

`MeanCI`

### Examples

    data(d.pizza)

    MeanSE(d.pizza$price, na.rm=TRUE)

    # evaluate data.frame
    sapply(d.pizza[,1:4], MeanSE, na.rm=TRUE)

[Package DescTools version 0.99.38 Index]