Which of the following is TRUE of a p-chart? A) The lower control limit is found by subtracting a fraction from the average number of defects. B) The lower control limit indicates the minimum acceptable number of defects. C) The lower control limit equals D₃ times p-bar. D) The lower control limit may be at zero. E) The lower control limit is the same as the lot tolerance percent defective.

Question

Quizplus · Accepted Answer

The lower control limit of a p-chart may be at zero, meaning that no defects are expected in the process. A and C are incorrect as they do not accurately describe how the lower control limit is calculated. B and E are also incorrect as the lower control limit is not used to indicate the minimum acceptable number of defects or the lot tolerance percent defective, respectively.

Which of the Following Is TRUE of a P-Chart