The Quality Assurance Department selected 12 samples of 100 printed circuit boards and tested them. The number of defective printed circuit boards in each sample was 3, 3, 0, 5, 1, 1, 5, 6, 6, 2, 0, and 1. What kind of control chart should be constructed to monitor the process?
A) mean chart
B) range chart
C) percent defective chart
D) c-bar chart

Question

Quizplus · Accepted Answer

Since the data represents the number of defectives in a sample, the appropriate control chart to monitor the process would be a percent defective chart. This chart tracks the proportion of defectives in each sample over time, allowing the Quality Assurance Department to monitor the process and make any necessary adjustments to improve quality. The mean chart and range chart are typically used for continuous data, and the c-bar chart is used to monitor the number of defects per item.

The Quality Assurance Department Selected 12 Samples of 100 Printed