Quick Mean Difference 4+


Designed for iPhone

    • 5.0 • 1 Rating
    • $0.99

iPhone Screenshots


The mean difference is a measure of statistical dispersion between means of two independent samples.

This app tests the hypothesis that the means, μ, of two samples are equal at some level of probablility, p. The relevant statistic is the Student's t-test for the appropriate probability and degrees of freedom, df.

The critical value of the t-test for 5% probability at 30 degrees of freedom is shown as t(0.05, 30).

There are three assumptions imbedded in this test. First, the samples must be randomly generated. Second, the samples must be independently sampled meaning that the inclusion of one subject does not influence the probability of selecting any other member of the population. Third, the population variances, or standard deviations as input into this app, of the two samples, A and B, are presumed to be equal.

What’s New

Version 3.0

- Updated to accommodate newest iOS.
- Code simplifications and revisions.

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

App Privacy

The developer, MSYapps, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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