GNU PSPP
Basic CharacteristicsGNU PSPP is a program for statistical analysis of sampled data. It is a free replacement for the proprietary program IBM SPSS. It can perform descriptive statistics, Ttests, anova, linear and logistic regression, measures of association, cluster analysis, reliability and factor analysis, nonparametric tests and more.
Who it is forPSPP is particularly aimed at statisticians, social scientists and students requiring fast convenient analysis of sampled data.
Available functions

ProsCons 

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GNU PSPP Tutorial 
