The statistical fact checker in your pocket!
In this day and age, it is increasingly difficult to separate conjecture from significance. PocketStat is a statistical fact checking tool built to make this discrimination less onerous. Use it to quickly assess statistical claims in manuscripts, seminars, posters, classes, and homework. Do you want to know whether the means of two groups differ from one another? Or if two correlations are significantly different? Or would you like to estimate the mean of population while only knowing the median? All these questions can be answered with PocketStat.
Chi-Square Analysis
Compute χ2 in a 2 × 2 contingency table. Purchase the premium version to enable computation in matrices as large as 6 × 10.
t-test Computation
Compute single-sample t-ttests. In the premium version, you can compute two-sample t-test, both independent and correlated.
Do two correlations differ significantly?
Use Fisher r to Z' transformation to determine whether two correlations differ from each other.
Do two means differ from each other?
If you know the means, standard deviation (or standard error of the mean), and the number of subjects, this calculator will compute the z statistic that will tell you whether the means differ significantly.
Estimate mean from median
If you know the median, range of values, and the number of subjects, you can estimate the mean, variance, and standard deviation. This is particularly useful for meta analysis.
Statistical Tables
Quickly look up p values for r, z, and χ2.
Power Computation: Continuous Outcome
Determine the number of subjects for a study given the level of confidence.
