# Statmagic PRO

> An easy-to-use statistics calculator.

Canonical page: [https://chrome-stats.com/d/info.statmagic.statmagic\_practice\_2](https://chrome-stats.com/d/info.statmagic.statmagic_practice_2)

## Overview

- **ID:** `info.statmagic.statmagic_practice_2`
- **Platform:** Android
- **Type:** Android app
- **Status:** Removed
- **Publisher:** D. Johnson
- **Category:** EDUCATION
- **Downloads:** 919
- **Rating:** 4.44 / 5 (10 ratings)
- **Version:** 1.6.2
- **Last updated:** 2022-12-29
- **First published:** 2017-12-04
- **Data as of:** 2024-11-27
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=info.statmagic.statmagic_practice_2)
- **Website:** [https://www.statmagic.info/](https://www.statmagic.info/)
- **Privacy policy:** [https://www.statmagic.info/privacy-policy.html](https://www.statmagic.info/privacy-policy.html)

## Description

&quot;Statmagic PRO has helped thousands of students learn stat and finish their homework faster. It eliminates tedious and error-prone number-crunching, and has built-in tools to help you avoid common mistakes -- all while making stats clearer and easier to learn.<br><br>Statmagic PRO is the best, easiest-to-use app for learning stats. Why?<br>• Simplicity. Statmagic uses the simple and familiar standard calculator layout.<br>• Automatic graphics and plots, so you can visualize what’s going on. For instance, you can finally skip the confusing Z table -- Statmagic automatically graphs and calculates the area (probability) under the normal curve, for any Z or T score.<br>• Press and hold definitions. Every input field has an on-the-spot definition, so you can quickly remind yourself what each statistical symbol means, and enter the correct value for it.<br>• Error checking. Statmagic automatically checks for typos and anomalous numbers, to help you prevent mistakes. (For example, if you select a Z test when n is &lt; 30 and the standard deviation is not known, Statmagic will politely suggest a T test instead!)<br>• Complete results. From the standard error to the Z score, to the p-value and &quot;&quot;reject Ho?&quot;&quot; conclusion, Statmagic calculates and returns every important value for every test. (And Statmagic PRO’s calculators have been tested exhaustively to ensure that they return correct answers, first and foremost!)<br><br>Plus:<br>• User-specified answer rounding.<br>• Extensive help material for each topic, with (1) step-by-step instructions, (2) explanations of the logic and formulas at work, and (3) example problems, which can be entered into a calculator at the tap of a button.<br>• Integration with Statmagic&#39;s online learning videos, which explain the core ideas of a semester-long stat course in less than 2 lectures&#39; time.<br><br>With its 17+ calculators, Statmagic covers the most common topics of intro stat classes, each with its own help page and memorable example problems. These are:<br>• Descriptive stats (mean, quartiles, standard deviation, etc.).<br>• Hypergeometric probability (with an auto-filling formula).<br>• Normal distribution (Z or T scores, with an automatic curve graphic and exact probabilities).<br>• Binomial, Poisson, Gamma, exponential, and continuous uniform probability distributions.<br>• One- and two-sample tests of mean (Z, T, and Welch tests).<br>• One- and two-sample tests of proportion.<br>• Confidence intervals (for a mean or a proportion, featuring a full, auto-filling CI formula, so you can see how the CI is constructed).<br>• Minimum N of a sample (for measuring a true mean or a proportion within a set margin of error).<br>• Least-squares linear regression (with a scatterplot that colors outliers, and a tool to calculate a predicted y using the regression equation).<br>• Chi-squared (which instantly calculates all intermediate expected and Chi-squared values, along with full test results.)<br><br>Learn statistics efficiently, and finish your stats homework faster. Learn, practice, and master stats with Statmagic PRO!&quot;

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Source: [Chrome-Stats](https://chrome-stats.com/d/info.statmagic.statmagic_practice_2)