Ratio

The ratio formed in the ANOVA process by dividing the mean square of each experimental factor effect by the mean square of the error variance. This is the ratio of variation that occurs between each of the experimental factors in comparison to the variation occurring within all the experimental factors being evaluated in the entire experiment. It is a form of signal-to-noise ratio in a statistical sense. The noise in this case is random experimental errornot variability due to the assignable-cause noise factors in the Taguchi noise array.

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