Z Stats is a statistics software specially designed for those who want to learn statistics without complications (but with all the power) of other commercial statistics packages. Actually, Z Stats was designed to teach and learn statistics, and the intention is to maintain it simple and easy to use. The latest release is Z Stats 2011, named after the year it was released. The current version will always correspond to the year a new version is available. We plan to release at least one version yearly. For now the test drive version is available free of charge for my students, however you need to register first.
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