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In an analysis of variance, how is the F statistic used?

OPTIONS To compare the mean square treatment with the mean square error To estimate the process average To find the variation within each subgroup To find the variation between different subgroups ANSWER To compare the mean square treatment with the mean square error EXPLANATION In...
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While performing monthly reviews, in the control chart of one of your production unit, you observe that the last 50 points are very near to the center line. All of them appear to be within about one sigma of the center line. What Interpretation would you derive from this?

OPTIONS Somebody miscalculated the original calculations of the control limits The process standard deviation has decreased during last month and hence the last 50 data points are showing values much closer to the center line, But, nobody thought to recompute the control limits to reflect...
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In a typical Measurement System Analysis activity, the GRR is 42% and the contribution is split equally among Gage Variation and Part Variation. What would you do?

OPTIONS Leave the GAGE. It is acceptable. Calibrate the equipment Calibrate the equipment and check operator variation Calibrate the equipment, check operator variation, and identify Part Variation. ANSWER Calibrate the equipment, check operator variation, and identify Part Variation. EXPLANATION Presence of Part Variation in the...
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