Two-Way Analysis of Variance: Statistical Tests and Graphics Using R by Thomas W. MacFarland
English | EPUB | 2012 | 145 Pages | ISBN : 1461421330 | 0.25 MB
In statistics, analysis of variance (ANOVA) is a collection of statistical models used to distinguish between an observed variance in a particular variable and its component parts. In its simplest form, ANOVA provides a statistical test of whether or not the means of several groups are all equal, and therefore generalizes a test between these groups. One test often used by statisticians and researchers in their work is the Two-Way ANOVA, which determines the differences–and possible interactions–when variables are presented from the perspective of two or more categories. When a Two-Way ANOVA is implemented, it enables one to compare and contrast variables resulting from independent or joint actions.