Grouped ANOVA


Synopsis

Performs an ANOVA significance test for a single numerical attribute based on the groups defined by another (nominal) attribute.


Description

This operator creates groups of the input example set based on the defined grouping attribute. For each of the groups the mean and variance of another attribute (the anova attribute) is calculated and an ANalysis Of VAriance (ANOVA) is performed. The result will be a significance test result for the specified significance level indicating if the values for the attribute are significantly different between the groups defined by the grouping attribute.


Input

, expects: ExampleSet, expects: ExampleSet


Output


Parameters


ExampleProcess