Whenever the calculated LCL for a p-chart is negative,use ________.
A)that value for the LCL because being negative is not a problem
B)the UCL - 1 instead
C)zero since the fraction nonconforming can never be negative
D)zero because a negative LCL is too confusing to use

Question

Quizplus · Accepted Answer

The fraction nonconforming cannot be negative, so it is not appropriate to use a negative LCL. Instead, it is best to use zero as the LCL in this situation.

Whenever the Calculated LCL for a P-Chart Is Negative,use ________