Analysis of variance

A statistical technique that provides a test of whether or not the means of several samples or variables are all equal, Statistical term related to quadratic deviations of means from a random variable. Proper method for multidimensional and multifactorial researches, designed on such a way that factors change at the same time, but can always be analyzed by themselves as well as in its mutual relationship. The analysis of variance determines the relative importance of several causal factors to produce a determined effect. Because in the social sciences experimenting only few times is possible the study of each factor through its systematic isolation, the analysis of variance should help with statistical-mathematical procedures of isolation. In statistics, analysis of variance (ANOVA) is a collection of statistical models and their associated procedures, which compare means by splitting the overall observed variance into different parts.