<P> Analysis of variance ( ANOVA ) is a collection of statistical models used to analyze the differences among group means and their associated procedures ( such as `` variation '' among and between groups ) , developed by statistician and evolutionary biologist Ronald Fisher . In the ANOVA setting , the observed variance in a particular variable is partitioned into components attributable to different sources of variation . In its simplest form , ANOVA provides a statistical test of whether or not the means of several groups are equal , and therefore generalizes the t - test to more than two groups . ANOVAs are useful for comparing ( testing ) three or more means ( groups or variables ) for statistical significance . It is conceptually similar to multiple two - sample t - tests , but is more conservative ( results in less type I error ) and is therefore suited to a wide range of practical problems . </P>
<P> Analysis of variance ( ANOVA ) is a collection of statistical models used to analyze the differences among group means and their associated procedures ( such as `` variation '' among and between groups ) , developed by statistician and evolutionary biologist Ronald Fisher . In the ANOVA setting , the observed variance in a particular variable is partitioned into components attributable to different sources of variation . In its simplest form , ANOVA provides a statistical test of whether or not the means of several groups are equal , and therefore generalizes the t - test to more than two groups . ANOVAs are useful for comparing ( testing ) three or more means ( groups or variables ) for statistical significance . It is conceptually similar to multiple two - sample t - tests , but is more conservative ( results in less type I error ) and is therefore suited to a wide range of practical problems . </P>
how would you explain the analysis of variance
how would you explain the analysis of variance
is a collection of statistical models used to analyze the differences among group means and their associated procedures ( such as `` variation '' among and between groups )
is a collection of statistical models used to analyze the differences among group means and their associated procedures ( such as `` variation '' among and between groups )