To initiate control charting, twenty-five samples of size five are periodically taken and the resistance (in ohms) of each copper wire is measured.An appropriate control chart to use for these data is the ________________________ .
A)p chart
B)c chart
C)x-bar and r chart
D)Pareto chart
E)ARL chart

Question

Quizplus · Accepted Answer

The x-bar and r chart is appropriate for this scenario because it is used for monitoring the process mean and variability when samples are of a fixed size, which in this case is five. The x-bar chart tracks the average resistance of the samples, while the r chart monitors the range within each sample, making it suitable for the given data on copper wire resistance.

To Initiate Control Charting, Twenty-Five Samples of Size Five Are