--- title: "Standard Deviation Calculator - Reviews, Revenue and Downloads in United States | Apple App Store" description: "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". " --- # Standard Deviation Calculator — United States ![Standard Deviation Calculator App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple62/v4/52/a8/23/52a8233d-d17a-c46d-3e87-91f28699694c/mzl.xyxfonhf.png/400x400bb.png) **Developer:** [Keely Hill](https://apptail.io/developer/keely-hill-Ewdd) **Category:** Utilities **Rating:** 2.4/5 (24 ratings) **Price:** Free **Bundle ID:** com.keelyhill.Std--Dev- **Store:** Apple App Store **Country:** United States **Version:** 2.1 (released 2016-09-05) **Original Release:** 2013-10-15 **App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id721321543) **AppTail Page:** [https://apptail.io/app/standard-deviation-calculator-yLud/united-states](https://apptail.io/app/standard-deviation-calculator-yLud/united-states) ## Standard Deviation Calculator Description 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. ## Standard Deviation Calculator Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple69/v4/62/80/d1/6280d10d-56d4-ac5e-134a-e53422d45650/mzl.dqnjqoog.png/640x960.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple69/v4/e0/59/49/e05949f4-c972-6f7f-a2a2-be3f3b34537e/mzl.zphbkdhh.png/640x960.png) ## Standard Deviation Calculator Rating Breakdown in United States - 5 stars: 7 (29%) - 4 stars: 0 (0%) - 3 stars: 2 (8%) - 2 stars: 1 (4%) - 1 stars: 14 (58%) ## Standard Deviation Calculator Reviews in United States ### ***** "GREAT APP" Not understanding all the negative reviews… great app in my opinion as a stats student -- victoriasmith7, 2023-02-09 ### *---- "Worst app=bad grade😠🤷🏻‍♀️🤷🏻‍♀️🤷🏻‍♀️😭" Worst app. Made me get a 30% in math. Thx diptards. -- _lexibunch, 2019-10-25 ### *---- "Yuck" Why make such a terrible app? -- Localth0t, 2019-01-24 ### *---- "Terrible" This calculator only does sample standard deviation. (n-1 in the denominator) It should be labeled as such in both the title and the data output -- Math_Wiz 32, 2018-12-18 ### *---- "Giey" Giey, gay, giieyyyy -- c. ju)ejsnjdk n, 2018-10-15 ### **--- "Student" All was correct except for Q3, please fix. -- Jgmace, 2017-09-19 ### *---- "Crashed after editing a data set" Didn't save. Don't waste your time -- Captain Klark, 2017-09-16 ### ***** "10/10" Okay, I never write reviews but this app I think has changed my life and the fact that it is free makes it 100 times better. I doesn't just do standard deviation but so much more! I would recommend this to anyone with a lot of math that they don't want to do by hand -- Trinibee129, 2016-08-20 ### *---- "Keeps Crashing" Every time I go back to edit or delete a number/item the app closes forcing me to start over. Very inconvenient. If it that didn't happen I'd give the app 5 stars. -- Craig The Hermit, 2016-07-26 ### ***** "This app changed my life for good" This app does wonders. I'm a new person. Before this app I was failing my math class but now I'm making a 99.99. 10/10 would recommend -- SODANK1738, 2016-04-11 [View all Standard Deviation Calculator reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews) ## Standard Deviation Calculator Discovered Keywords - standard deviation calculator ## Standard Deviation Calculator Available In - [United States](https://apptail.io/app/standard-deviation-calculator-yLud/united-states) - [Canada](https://apptail.io/app/standard-deviation-calculator-yLud/canada) - [Thailand](https://apptail.io/app/standard-deviation-calculator-yLud/thailand) - [United Arab Emirates](https://apptail.io/app/standard-deviation-calculator-yLud/united-arab-emirates) - [China](https://apptail.io/app/standard-deviation-calculator-yLud/china) - [Hong Kong SAR China](https://apptail.io/app/standard-deviation-calculator-yLud/hong-kong) - [United Kingdom](https://apptail.io/app/standard-deviation-calculator-yLud/united-kingdom) - [Australia](https://apptail.io/app/standard-deviation-calculator-yLud/australia) - [Ecuador](https://apptail.io/app/standard-deviation-calculator-yLud/ecuador) - [Egypt](https://apptail.io/app/standard-deviation-calculator-yLud/egypt) - [Indonesia](https://apptail.io/app/standard-deviation-calculator-yLud/indonesia) - [Israel](https://apptail.io/app/standard-deviation-calculator-yLud/israel) - [India](https://apptail.io/app/standard-deviation-calculator-yLud/india) - [Iceland](https://apptail.io/app/standard-deviation-calculator-yLud/iceland) - [Japan](https://apptail.io/app/standard-deviation-calculator-yLud/japan) - [South Korea](https://apptail.io/app/standard-deviation-calculator-yLud/south-korea) - [Kuwait](https://apptail.io/app/standard-deviation-calculator-yLud/kuwait) - [Kazakhstan](https://apptail.io/app/standard-deviation-calculator-yLud/kazakhstan) - [Lebanon](https://apptail.io/app/standard-deviation-calculator-yLud/lebanon) - [North Macedonia](https://apptail.io/app/standard-deviation-calculator-yLud/north-macedonia) - [Mexico](https://apptail.io/app/standard-deviation-calculator-yLud/mexico) - [Malaysia](https://apptail.io/app/standard-deviation-calculator-yLud/malaysia) - [Nigeria](https://apptail.io/app/standard-deviation-calculator-yLud/nigeria) - [Norway](https://apptail.io/app/standard-deviation-calculator-yLud/norway) - [Nepal](https://apptail.io/app/standard-deviation-calculator-yLud/nepal) - [New Zealand](https://apptail.io/app/standard-deviation-calculator-yLud/new-zealand) - [Philippines](https://apptail.io/app/standard-deviation-calculator-yLud/philippines) - [Pakistan](https://apptail.io/app/standard-deviation-calculator-yLud/pakistan) - [Russia](https://apptail.io/app/standard-deviation-calculator-yLud/russia) - [Saudi Arabia](https://apptail.io/app/standard-deviation-calculator-yLud/saudi-arabia) - [Singapore](https://apptail.io/app/standard-deviation-calculator-yLud/singapore) - [Türkiye](https://apptail.io/app/standard-deviation-calculator-yLud/turkey) - [Taiwan](https://apptail.io/app/standard-deviation-calculator-yLud/taiwan) - [Ukraine](https://apptail.io/app/standard-deviation-calculator-yLud/ukraine) - [Vietnam](https://apptail.io/app/standard-deviation-calculator-yLud/vietnam) - [South Africa](https://apptail.io/app/standard-deviation-calculator-yLud/south-africa) - [Argentina](https://apptail.io/app/standard-deviation-calculator-yLud/argentina) - [Azerbaijan](https://apptail.io/app/standard-deviation-calculator-yLud/azerbaijan) - [Brazil](https://apptail.io/app/standard-deviation-calculator-yLud/brazil) - [Belarus](https://apptail.io/app/standard-deviation-calculator-yLud/belarus) - [Switzerland](https://apptail.io/app/standard-deviation-calculator-yLud/switzerland) - [Chile](https://apptail.io/app/standard-deviation-calculator-yLud/chile) - [Dominican Republic](https://apptail.io/app/standard-deviation-calculator-yLud/dominican-republic) - [Oman](https://apptail.io/app/standard-deviation-calculator-yLud/oman) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. 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