If a process is in control, we expect all the data values to fall within one standard deviation of the mean.

Question

Quizplus · Accepted Answer

In a process that is in control, we typically expect about 68% of the data values to fall within one standard deviation of the mean, about 95% within two standard deviations, and about 99.7% within three standard deviations, according to the empirical rule for a normal distribution.

If a Process Is in Control, We Expect All the Data