## Summary

The Excel DEVSQ function returns the sum of the squared deviations from the mean for a given set of data.

## Purpose

Get sum of squared deviations

Calculated sum

## Syntax

``=DEVSQ(number1,[number2],...)``
• number1 - First value or reference.
• number2 - [optional] Second value or reference.

## How to use

The Excel DEVSQ function calculates the sum of the squared deviations from the mean for a given set of data. Variance and standard deviation functions deal with negative deviations by squaring deviations before they are averaged. DEVSQ calculates the sum of the squared deviations from the mean, without dividing by N or by N-1.

The DEVSQ function takes multiple arguments in the form number1number2number3, etc. up to 255 total. Arguments can be a hardcoded constant, a cell reference, or a range. A single range or array can be provided instead of multiple arguments.

### Examples

In the example shown, the formula in G5 is:

``````=DEVSQ(B5:B10)
``````

The formulas in C5 and D5 are, respectively:

``````=B5-\$G\$4 // deviation
=C5^2 // squared deviation
``````

The value in D12 (34) is simply the sum of D5:D10, and agrees with the value calculated directly by DEVSQ in G5.

### Notes

• Arguments can be numbers, names, arrays, or references that contain numbers.
• Empty cells, and cells that contain text or logical values are ignored. Author ### Dave Bruns

Hi - I'm Dave Bruns, and I run Exceljet with my wife, Lisa. Our goal is to help you work faster in Excel. We create short videos, and clear examples of formulas, functions, pivot tables, conditional formatting, and charts.