When used together for variables data, which of the following pair is the MOST useful in preparing control charts?

Question

Quizplus · Accepted Answer

The pair X-bar and R are the most useful in preparing control charts for variables data. X-bar refers to the average of the sample means, while R refers to the range between the largest and smallest sample values. These two statistics are commonly used to monitor process performance over time and detect process variations. A control chart based on X-bar and R can help identify when a process is out of control, allowing for corrective action to be taken. AQL (Acceptable Quality Level) and p-bar are more commonly used in attribute data, while p and n are used for estimating proportions in a population. R and sigma are also used for control charts, but X-bar and R are considered more effective for handling variability in process performance.

When Used Together for Variables Data, Which of the Following