Release Name: 0.8.1
Notes:
A suite for basic and advanced statistics on Ruby. Tested on Ruby 1.8.7, Ruby 1.9 and JRuby 1.4 (Ruby 1.8.7 compatible)
Includes:
* Descriptive statistics: frequencies, median, mean, standard error, skew, kurtosis (and many others).
* Imports and exports datasets from and to Excel, CSV and plain text files.
* Correlations: Pearson's r, Spearman's rank correlation (rho), Tetrachoric, Polychoric
* Tests: T, Levene, U-Mannwhitney, One-Way Anova
* Regression: Simple, Multiple, Probit and Logit
* Factorial Analysis: Extraction (PCA and Principal Axis) and Rotation (Varimax and relatives)
* Dominance Analysis, with multivariate dependent and bootstrap (Azen & Budescu)
* Sample calculation related formulas
* Creates reports on text, html and rtf, using ReportBuilder
Changes:
=== 0.8.1 / 2010-03-29
* Fixed Regression summaries
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