A control chart used when the output of a process is measured in terms of the mean value of a variable such as a length, weight, temperature, and so on is a(n) _____ chart.
A) p
B) x-bar
C) R
D) np

Question

Quizplus · Accepted Answer

An x-bar chart is used to monitor and control the mean value of the output of a process that is measured in terms of a continuous variable such as length, weight, temperature, or time. The chart plots the sample means over time and provides upper and lower control limits that help identify when the process is drifting out of control. The other options (A, C, D) are control charts used for different types of data or variables.

A Control Chart Used When the Output of a Process