What is a control chart that monitors the proportion of defects in a sample?
A) x-bar chart
B) R-chart
C) p-chart
D) c-chart
E) OC chart

Question

Quizplus · Accepted Answer

A p-chart is specifically designed to monitor the proportion of defects in a sample. The chart plots the sample proportion of defects for each subgroup over time, and upper and lower control limits are calculated based on past performance. Any data points outside of these control limits indicate a process that is out of control and may require attention. The other choices (x-bar chart, R-chart, c-chart, and OC chart) are designed to monitor different aspects of a process, such as the mean, variation, count, and capability, respectively.

What Is a Control Chart That Monitors the Proportion of Defects