A np chart is used for:
A) controlling the number of nonconformities of a product
B) controlling the fraction nonconforming in a lot
C) cases where there are few opportunities for a nonconformity to occur
D) controlling the number nonconforming of a product

Question

Quizplus · Accepted Answer

An np chart is used for controlling the number of nonconformities of a product. It is a type of control chart that displays the number of nonconformities in a sample of constant size. Therefore, choice A is the correct answer. Choice B is incorrect because the alternative option for controlling the fraction nonconforming in a lot is p chart. Choice C is incorrect because np chart is suitable for situations where there are many opportunities for a nonconformity to occur, while few opportunities require a u chart. Choice D is incorrect because np chart is used to control the number of nonconformities rather than the number of nonconforming products.

A Np Chart Is Used For