The Excel **STDEV.P** function is a *Statistical *formula that calculates and returns the standard deviation for the entire population of data. The standard deviation is a measure of how much values are dispersed from the mean of a data set. The **STDEV.P** calculates the standard deviation using the "n" method. In this guide, we’re going to show you how to use the Excel **STDEV.P **function and also go over some tips and error handling methods.

## Supported versions

- Excel 2010 and later

## Excel STDEV.P Syntax

## Arguments

number1 |
The first number or reference in the population. You can also use an array instead of multiple arguments. |

[number2], … |
Other numbers of the population up to 254 arguments. |

## Excel STDEV.P Use Cases

The standard deviation is a measure of how widely values are dispersed from the middle value (the mean). The Excel **STDEV.P** (STDEV P) function assumes that given arguments are the entire population. The function uses the following formula: where *x* is the average (mean) and *n* is the sample size.

All you need to do is to enter your dataset as the function arguments.

## Tips

- Use the Excel
**STDEV.P**(STDEV P) to calculate the standard deviation for entire population. - The standard deviation is calculated using the "n" method.
- Prefer using the
**STDEV.S**to calculate the standard deviation for a sample of the population. The**STDEV.S**function uses the "n - 1" method. - You can use the
**AVERAGE**function to calculate the mean of a data set. - The
**STDEVP**is the older version of this function. We recommend refraining from using the**STDEVP**function. - Arguments can be numbers or names, arrays, or references that contain numbers.
- Logical values, and text representations of numbers that you type directly into the list of arguments are counted.
- If an argument is an array or reference, only numbers in that array or reference are counted. Empty cells, logical values, text, or error values in the array or reference are ignored.
- Arguments that are error values or text that cannot be translated into numbers will give errors.
- If you want to include logical values and text representations of numbers in a reference as part of the calculation, use the
**STDEVPA**function instead.