Release Name: 0.11.2
Notes:
A suite for basic and advanced statistics on Ruby. Tested on Ruby 1.8.7, 1.9.1, 1.9.2 (April, 2010) and JRuby 1.4 (Ruby 1.8.7 compatible).
Include:
* 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.
* Anova: generic and vectorbased Oneway ANOVA
* Tests: F, T, Levene, UMannwhitney.
* Regression: Simple, Multiple (OLS), Probit and Logit
* Factorial Analysis: Extraction (PCA and Principal Axis), Rotation (Varimax, Equimax, Quartimax) and Parallel Analysis, for estimation of number of factors.
* Dominance Analysis, with multivariate dependent and bootstrap (Azen & Budescu)
* Sample calculation related formulas
* Creates reports on text, html and rtf, using ReportBuilder gem
Changes:
=== 0.11.2 / 20100505
* Updated dependency for 'extendedmatrix' to 0.2 (Matrix#build method)
