Analysis of Variance (ANOVA)

Analysis of Variance (ANOVA)

Analysis of variance is a statistical test to determine if all sample groups in a study are affected by the same factors, and if they are affected to the same degree. The groups are kept separate and tests are done independently on each group, but the results are then compared. The sample groups are examined to see if the average within each group is the same and how much impact different variables have on the test.