iOS Universal Education
Statmagic PRO makes intro stats simpler, clearer, and easier to learn. It has no ads or in-app purchases -- meaning no interruptions and no paywalls keeping you from full functionality.
It's the best, easiest-to-use app for learning stats, featuring:
> Complete and accurate results for 11 different statistical topics and tests. Every calculator in statmagic has been exhaustively tested to ensure that it returns correct answers, first and foremost.
> Automatic graphics and plots, so you can visualize what’s going on.
> Input validation and warning messages, to help prevent simple mistakes.
> Press-and-hold definitions for all inputs, so you can remember what each statistical symbol means, and enter the right value for it.
> User-specified answer rounding.
> An exceedingly easy dataset import feature. Just open a spreadsheet in a spreadsheet app, copy the data onto your device's clipboard, and statmagic PRO can read it! Statmagic PRO will even help you select the correct test for your 1-sample, 2-sample, or paired data.
> Extensive, yet easy-to-navigate help material, with straightforward explanations of the logic and formulas of statistics, honed by years of one-on-one tutoring experience.
> Integration with a statmagic's online learning videos, which explains the core ideas of a semester-long stat course in less time than 2 standard lectures.
With its 11 thoughtfully-designed calculators, statmagic PRO covers the most common topics of intro stat classes, each with its own help page and memorable example problems. These are:
> Descriptive stats (mean, quartiles, standard deviation, etc.).
> Probabilities (with Z and T scores) on the normal distribution.
> One- and two-sample tests of mean (Z, T, and Welch tests).
> One- and two-sample tests of proportion (allowing both decimal "0.48" and fractional "54/112" type entries for p).
> Confidence intervals (for a mean or a proportion, featuring a full, auto-filling CI formula, so you can see how the CI is constructed).
> Minimum N of a sample (for measuring a true mean or a proportion within a set margin of error).
> Least-squares linear regression (with an automatic scatterplot coloring outliers, and a tool to calculate the predicted y for any chosen x using the regression equation -- plus, this y-hat is automatically plotted on the line, turning orange to warn you of extrapolation!).
> The best-designed Chi-squared calculator out there. (Which, besides furnishing full test results, including the critical Chi-square and p values, instantly calculates cellular and total expected and Chi-squared values once you enter the observed counts. Handles up to a 7x7 table!)
Finish your stats homework faster -- learn, practice, and master stats with statmagic PRO.
A few minor updates.