1.

Upper and lower boundaries of the desired values of y are plotted as lines. These are the _________ and _________ The average value (X, said as X-bar ) is centred b/w the control limits. The range of the control limits, R, depends on the statistical variation of the process.

A. tHigher limit and lower limit
B. tUpper control limit and lower control limit
C. tMax. limit and Min. Limit
D. tUpper point and lower point
Answer» C. tMax. limit and Min. Limit


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