What's New

This app has been updated by Apple to use the latest Apple signing certificate.

App Description

Welcome to stats!, an app that provides an in-depth overview of many statistical topics, from descriptive statistics and t-tests to multiple linear regression and beyond!

The app contains information on the underlying concepts, mechanics and interpretations of the major tools of data analysis. When new (or even old) to statistics, it is often a challenge to determine the best test to run, given the question you want to answer and the data you have. This app offers a step-by-step tool to help you make these decisions! Appropriate for students from AP level statistics through undergraduate and graduate coursework, stats! hopes to make learning stats fun.

Designed and developed by Elizabeth A. Albright, PhD an assistant professor of the practice at Duke University and Little Green Software, Durham, NC. The development of this app was inspired by the Dean’s Digital Initiative (2013) at the Nicholas School of the Environment at Duke University.

Topics covered in the app:
- Data types
- Descriptive statistics
- Probability and probability distributions
- Sampling
- Confidence intervals
- Comparison of means
- Power analysis
- Transformations
- Non-parametric tests
- ANOVA
- Simple linear regression
- Multiple linear regression
- Generalized linear models

iPhone Screenshots

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iPad Screenshots

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App Changes

  • October 14, 2014 Initial release
  • May 10, 2015 Price decrease: $1.99 -> $0.99
  • May 24, 2015 Price increase: $0.99 -> $1.99
  • May 28, 2015 Price decrease: $1.99 -> $0.99
  • June 14, 2015 Price increase: $0.99 -> $1.99
  • July 05, 2015 Price decrease: $1.99 -> $0.99
  • July 31, 2015 Price increase: $0.99 -> $1.99
  • August 22, 2015 Price decrease: $1.99 -> $0.99
  • September 06, 2015 Price increase: $0.99 -> $1.99
  • September 27, 2015 Price decrease: $1.99 -> FREE!
  • September 28, 2015 Price increase: FREE! -> $1.99
  • September 29, 2015 Price decrease: $1.99 -> $0.99
  • September 30, 2015 Price decrease: $0.99 -> FREE!
  • October 03, 2015 Price increase: FREE! -> $0.99
  • November 21, 2015 Price increase: $0.99 -> $2.99
  • November 25, 2015 Price decrease: $2.99 -> $1.99
  • June 23, 2016 Price decrease: $1.99 -> FREE!
  • November 06, 2016 Price increase: FREE! -> $0.99
  • November 26, 2019 Price decrease: $0.99 -> FREE!
  • July 14, 2020 Price increase: FREE! -> $0.99