Which statistical quality control chart would be used to determine if a DVD manufacturing plant is performing according to specifications?
A) X-bar chart
B) r-chart
C) p-chart
D) c-chart

Question

Quizplus · Accepted Answer

The p-chart is used for monitoring the proportion of nonconforming items in a sample when the sample size is constant. In this case, the DVD manufacturing plant would need to monitor the proportion of defective DVDs produced, and the p-chart would be the best choice for this purpose. The X-bar chart is used for monitoring the process mean, the r-chart is used for monitoring the process variability, and the c-chart is used for monitoring the number of nonconforming items in a sample when the sample size is variable.

Which Statistical Quality Control Chart Would Be Used to Determine