MeanSE {DescTools}

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{\sigma}{\sqrt{n}}

\sigma being standard deviation of x and n the length of x.

Value

the standard error as numeric value.

Author(s)

Andri Signorell <[e-mail]>

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)