# Handbook of Descriptive Statistics/Template

This a template for how an entry in the Handbook of Descriptive Statistics should look. Please copy and paste the source of this page when creating a new entry.

## DescriptionEdit

- Brief description of what it is and what its used for.
- Mathematical formula
- Link to a Wikipedia article on it.

## UsagesEdit

Describe in detail here data sets and purposes on which it is most useful. Describe also data sets for which it may give misleading results.

## DistributionsEdit

- Include standard values for common distributions, if they exist. For example, a normal distribution always has a skew and kurtosis of zero.
- Include standard error for normal distribution, and for other distributions also if possible.
- Sampling distribution.

## CalculationEdit

Include any alternative methods of calculation, especially for large data sets, or when other measures have already been calculated.

(An example: once you have the count, sum, sum of squares, cubes and fourth powers for a data set, you can then use these to easily calculate the Mean, Std. Dev, Skew and Kurtosis, rather than having to go through the entire dataset multiple times calculating differences.)

## SoftwareEdit

Include how it is accessed in common statistical packages, if known. Can also provide links to source code samples for calculating it, etc.