A company is interested in monitoring the number of scratches on Plexiglas panels.The appropriate control chart to use would be
A) $\bar { X }$ -chart.
B) p-chart.
C) c-chart.
D) R-chart.

Question

Quizplus · Accepted Answer

A c-chart is appropriate for monitoring the count of defects per unit, with the unit being the panel in this case. As scratches are discrete and countable, a p-chart and $\bar { X }$ -chart would not be appropriate. An R-chart is used to monitor the variability of continuous measurements, so it is not suitable for counting defects. Therefore, a c-chart is the best choice to monitor the number of scratches on Plexiglas panels.

A Company Is Interested in Monitoring the Number of Scratches Xˉ\bar { X }Xˉ

A Company Is Interested in Monitoring the Number of Scratches $\bar { X }$