If the lower limit for a p-chart computes to a number less than zero,this indicates:
A)that the lower limit should be set at zero.
B)that the process is out of control.
C)that an attribute measure is incorrectly used.
D)that a calculation error has been made.

Question

Quizplus · Accepted Answer

A lower limit cannot be less than zero because it represents a percentage or a proportion, which cannot be negative. Therefore, the lower limit should be set at zero. This situation does not necessarily indicate any process issue or calculation error.

If the Lower Limit for a P-Chart Computes to a Number