Free ANOVA program for large data sets ("David L. Woods" )

Subject: Free ANOVA program for large data sets
From:    "David L. Woods"  <dlwoods(at)UCDAVIS.EDU>
Date:    Thu, 4 Sep 2003 20:00:25 -0700

The Human Cognitive Neurophysiology Laboratory in Martinez is pleased to announce the release of CLEAVE ("C Language Exploratory Analysis of Variance with Enhancements"). CLEAVE is a free program designed for the analysis of very large data sets of the sort obtained in experiments using EEG and fMRI. CLEAVE runs on any operating system and is distributed with executables for Windows and Linux as well as with source code for compilation on other systems. CLEAVE incorporates easy-to-use data specifications (a list of factors followed by a variable), and adds a number of feature enhancements including 1) Corrections of degrees of freedom for non-independent factors including Geisser-Greenhouse, Huyhn-Feldt, and Lower Bound epsilon correction and their corresponding corrected p values for repeated measures designs. 2) Treatment magnitude estimations: partial omega squared, partial eta squared, and R squared. 3) A convenient ranking of factors based upon treatment magnitudes and significance levels. 4) Post-Hoc Significance Tests: Scheffe Post-Hoc test parameters and pairwise comparison tests of factor level significance (Bonferroni and Sidak) with many options. 5) Post-Hoc Power Table: This table can be used during trial runs to gauge how many subjects will be needed in order to achieve significant results given a fixed number of subjects. 6) Random Factors - this allows the user to generalize the conclusions of the ANOVA to factor levels not studied by assuming that specified factor levels in the experiment are representative of those of the population studied. 7) A configuration file to make the program more tunable. For a free download please visit Good Luck, David Woods David L. Woods, Professor of Neurology, Dept. of Neurology,UC Davis, Chief, Clinical Neurophysiology and Chief, Research fMRI imaging, Neurology Service (127E), Building R4, VANCHCS, 150 Muir Rd., Martinez, CA 94553 Tel (925) 372-2571, Fax (925) 229-2315 Email:dlwoods(at) Publications:

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