Standard Deviation Calculator app for iPhone and iPad

4.4 ( 1344 ratings )

Utilities Education
Developer: Keely Hill

Free

Current version: 2.1, last update: 7 years ago
First release : 15 Oct 2013
App size: 1.64 Mb

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

It will also return the:
-mean(average)
-variance
-population deviation
-Median
-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.