The 68-95-99.7 rule tells us that if a process with mean $\mu$ and standard deviation $\sigma$ varies according to a Normal distribution,then almost all measurements on individual products will lie in the range $\mu$ ± 3$\sigma$.What do we call the values $\mu$ - 3$\sigma$ and $\mu$ + 3$\sigma$?
A)The control limits
B)The confidence limits
C)The natural tolerances
D)The capability limits

Question

Quizplus · Accepted Answer

The values $ \mu - 3\sigma $ and $ \mu + 3\sigma $ define the range within which about 99.7% of the values of a normal distribution are expected to fall. This range is referred to as the natural tolerances of the process, indicating the natural variation limits within the process under normal conditions.

The 68-95-99 μ\muμ And Standard Deviation σ\sigmaσ Varies According to a Normal Distribution,then Almost All Measurements on Mean

The 68-95-99 $\mu$ And Standard Deviation $\sigma$ Varies According to a Normal Distribution,then Almost All Measurements on Mean