Machines A and B have been showing disparate efficiency and defects per unit rates despite similar variation in quality at purchase time. If the mean squares between the two machines is 250 and the mean squares from each machine 100, what is the value of the F_STAT?

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Quizplus · Accepted Answer

The value of the F_STAT is 2.5. Key Takeaway: The F-statistic (F_STAT ) in ANOVA tests the hypothesis about the means of the two machines. The F_STAT is calculated by dividing the mean squares between the samples and the mean squares from each machine as follows: F_STAT = MSA/MSW = 250/100 = 2.5. In other words, The F_STAT is the ratio of the among estimate of variance and the within estimate of variance.

Machines a and B Have Been Showing Disparate Efficiency and Defects