To determine whether the process distribution standard deviation has changed,we use a(n):
A) chart.
B) S chart.
C) p chart.
D) All of these choices are true.

Question

Quizplus · Accepted Answer

To determine whether the process distribution standard deviation has changed, we should use an S chart (also known as a standard deviation control chart). This chart tracks the variation in the process data and can help identify when the standard deviation has changed. A chart tracks proportions and is used for attribute data, not continuous data. A chart tracks the proportion of nonconforming items in a sample, which is also not relevant for determining changes in the process distribution standard deviation. While a regular chart would show any changes in the mean of the process, it would not necessarily indicate changes in the standard deviation. Therefore, the best choice is B) S chart.

To Determine Whether the Process Distribution Standard Deviation Has Changed,we