# Standard error

### Description

Calculates the standard error of the values in `x`

### Usage

1 |

### Arguments

`x` |
a numeric vector. |

`na.rm` |
a logical value indicating whether |

### Details

The standard error of a length one vector is `NA`

and if `x`

is not
a vector an error will be printed.

The standard error is defined as:

*SE = sqrt(var(x)/length(x))*

### Value

The standard error of `x`

is returned.

### Author(s)

Thomas Kvalnes

### See Also

`var`

, `length`

, `sqrt`

### Examples

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