# Standard error (statistics)

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The **standard error** (SE), in statistics, is a measure of spread for a sample of data. Mathematically, the SE is the standard deviation divided by the square root of the sample size.

## Standard error vs. standard deviation[edit]

The **standard error** is commonly confused with the standard deviation.

For a simple explanation of the difference, see What is the difference between standard deviation and standard error?

For a more indepth explanation, perhaps Standard deviations and standard errors.

## See also[edit]

- Standard error (statistics) (Wikipedia)