ANOVA
Six Sigma
ANOVA (Analysis of Variance)
Analysis of Variance
Statistical method for testing whether means of multiple groups differ more than expected from random variation.
Examples
- 01A Green Belt uses ANOVA to test whether seal strength differs between three sealing machines, using 30 samples from each.
- 02In the Analyze phase, ANOVA shows machine 2 differs significantly (p = 0.003), which supports the hypothesis that its heater is weaker.
- 03The ANOVA result and the follow-up heater repair are documented in the tollgate review before the project moves to Improve.