Quick Ttest

QuickTTest is a statistical programme for carrying out Student's t-test and calculating means, SDs, and SEMs. Its main advantage over other programmes is the ability to enter data on which to carry out the t-test not only as individual values but also as previously calculated mean SD or mean SEM. Version 1.8 corrects an error in the way in which QuickTTest carries out a preliminary comparison (F-test) of the variances of samples to be tested in order to decide whether to use the approximate t-test. This version should replace the previously submitted version (QuickTTest 1.7) in the archives. (The most appropriate Directory is the Statistics directory (not the Calculator directory in which QuickTTest 1.7 was placed). The programme runs on any Mac using any System up to and including System 9.1. QuickTTest 1.8 is freeware.