The s-chart is recommended when:
A)the sample size equals one.
B)tight control of variability is required.
C)loose control of variability is acceptable.
D)the sample size needs to be reduced.

Question

Quizplus · Accepted Answer

The s-chart is a control chart that monitors the variability or dispersion of a process. It is recommended when tight control of variability is required, as it provides a visual representation of any changes or shifts in process variability over time. Other control charts, such as the X-bar chart, may be more appropriate when monitoring the process mean. Having a sample size of one does not necessarily impact the use of an s-chart. Similarly, the s-chart is not recommended when loose control of variability is acceptable or when the sample size needs to be reduced.

The S-Chart Is Recommended When