The s-chart is recommended when:
A)the control chart calculations needs to be performed by hand.
B)tight control of variability in the process is required.
C)the $ \bar{x} $ -chart is not associated with an R-chart.
D)the sample size for each sample needs to be reduced.

Question

Quizplus · Accepted Answer

The s-chart is used when tight control of variability in the process is required. It is not recommended when the control chart calculations need to be done by hand, or the sample size needs to be reduced. The association of the $ \bar{x} $ -chart with an R-chart is not a requirement for using the s-chart. Therefore, the best choice is B.

The S-Chart Is Recommended When: A)the Control Chart Calculations Needs xˉ \bar{x} xˉ

The S-Chart Is Recommended When:
A)the Control Chart Calculations Needs $\bar{x}$