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Pac-Man and the Analysis of Variance

Summary: Six Sigma Master Black Belts often experience difficulties when explaining analysis of variance (ANOVA) tables to individuals unfamiliar with the concept. In such situations, the Pac-Man video game can be used to present the idea of squariances and degrees of freedom in an ANOVA table. In the analogy, the total squariance is the total number of pellets Pac-Man must eat in one game, whereas total degrees of freedom is the amount of lives that are available. The approach can be extended to more complex designs, and is especially useful when explaining how an artificially small mean squared error may result in many significant effects being detected.

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  • Topics: Six Sigma
  • Keywords: Analysis of variance (ANOVA),Black belt (BB),Six Sigma,Training and presentation techniques
  • Author: Bower, Keith M.
  • Journal: Six Sigma Forum Magazine