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Step-by-step SPSS tutorials with screenshots explaining how to perfrom basic, intermediate and advanced statistical tests in SPSS as well as comprehensive statistical guides.

wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual. Our multilingual how to manual has free step-by-step instructions on how to do all types of things.

The University of Delaware, founded in 1743, offers over 100 academic majors; its distinguished faculty includes internationally known scientists, authors and teachers.

Web site for statistical computation; probability; linear correlation and regression; chi-square; t-procedures; t-tests; analysis of variance; ANOVA; analysis of covariance; ANCOVA; parametric; nonparametric; binomial; normal distribution; Poisson di...

"He who refuses to do arithmetic is doomed to talk nonsense."

GraphPad Prism is a powerful combination of biostatistics, curve fitting (nonlinear regression) and scientific graphing in one comprehensive program. Easily organize, analyze and graph repeated experiments; pick appropriate statistical tests and inte...

Welcome to the IBM support portal. From this site you can search the technical support knowledge base, get drivers and software downloads, access forums and premium services, submit problems, and obtain warranty and other support-related information

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Best-selling statistics software integrated into Microsoft Excel, for statistical analysis, exploration and clinical method validation. Download a free 30-day trial.