StatsMate For iPad 4+

The F test statistic isn't calculated correctly when testing a claim about two standard deviations (it is always 1). The program is very useful when I am teaching. The only problem is that I allow my students to use their phones for calculators when taking exams (all my exams are open book), if they find this app they will all be getting 100's. Time to limit phone usage.

Can't load data. Worthless calculator if you can't load more than three numbers before crashing.

The TI 84, Casio Prizm, and Casio 9750 all have outstanding statistical capabilities. So does GeoGebra, the free international software for all computers. The apps in the app store have been limited. There are some good mathematics apps, and some good graphics calculator apps. But this is the first app I have found that begins to deal effectively with statistics. It really does a lot of things well. It handles distributions and hypothesis testing beautifully. I used to buy the CRC Handbook of Statistics, and this app covers much of that material. It does linear regression only, but I expect other regression models will be added. The handling of files is good if you spend the extra dollar. It's big strength is that you can make your statistical calculations anywhere, and email the results. None of the graphics calculators can do this. And, on the IPod Touch, it is really portable, and with you wherever you get a statistical idea. This is an extremely worthwhile app even if you use high powered software on your computer. In addition, formulas are given so that you don't just enter numbers and get mysterious results. It is an excellent app, well worth buying.