Standard Deviation Calculator 4+

Keely Hill

Designed for iPad

    • 2.4 • 24 Ratings
    • Free
    • Offers In-App Purchases



Use this app to calculate the standard deviation of a set of values.

It will also return the:
-population deviation
-Q1 & Q3

To add a value to the set press "+Row". When all data are in press "Calculate".
Note: Population deviation (n-1) is unbiased, while normal standard deviation (n) is biased.

To calulate the z-score enter a number into the z-score tab, then click find z-score. The z-score will be based off the main table.

What’s New

Version 2.1

This app has been updated by Apple to display the Apple Watch app icon.

Fixed some calculation issues with the five number summary.
Small UI changes

Ratings and Reviews

2.4 out of 5
24 Ratings

24 Ratings

Jgmace ,


All was correct except for Q3, please fix.

victoriasmith7 ,


Not understanding all the negative reviews… great app in my opinion as a stats student

Captain Klark ,

Crashed after editing a data set

Didn't save. Don't waste your time

App Privacy

The developer, Keely Hill, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.

More By This Developer

You Might Also Like