For process control charts,using control limits corresponding to z = 3 standard deviations from the mean will capture what percentage of the random variation in the process?
A)90%
B)95.6%
C)98.2%
D)99.7%

Question

Quizplus · Accepted Answer

In a normal distribution, control limits set at ±3 standard deviations from the mean will capture 99.7% of the data, assuming the process variation is random.

For Process Control Charts,using Control Limits Corresponding to Z =