A p chart is used for:
A) controlling the count of nonconformities in a product
B) controlling the fraction nonconforming
C) cases where there are few opportunities for nonconformities to occur
D) none of these

Question

Quizplus · Accepted Answer

A p chart is specifically used to control the fraction nonconforming in a sample. It is useful for situations where the number of opportunities for nonconformities is large and constant, and it is not appropriate to control the count of nonconformities. Choice A refers to a c chart, and choice C is not relevant to the use of a p chart.

A P Chart Is Used For