R1.25: The ANOVA method for analyzing a gage study is preferred over the Average and Range method because it:
A. Makes calculations easier to perform by hand.
B. Includes interactions between operators and items being measured.
C. Uses constant values from lookup tables to estimate variation.
D. Is more likely to identify inconsistent measurements within the study.
The ANOVA method for analyzing a gage study is preferred over the Average and Range method because it Includes interactions between operators and items being measured. (option B) or is more likely to identify inconsistent measurements within the study (option D). As ANOVA is useful to find the sources of variation i.e. within or between the things. So that, option B and D is appropriate. Average and Range method only gives the summary of that data.
Since, option (A) only in small number of observations we can perform calculations by hand. Option (C) Uses constant values from lookup tables to estimate variation is useful in changing the pattern or vlaues of the tables only.
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