When the purpose of sampling is to detect when a process becomes too variable,the chart of choice will be an R chart.

Question

Quizplus · Accepted Answer

An R chart is used to monitor the variability of a process over time. If the range of data points on the chart exceeds the established control limits, it indicates that the process has become too variable and may require corrective action. Therefore, an R chart is an appropriate choice when the purpose of sampling is to detect when a process becomes too variable.

When the Purpose of Sampling Is to Detect When a Process