In process control, sample ranges may be used to approximate
sample standard deviations

Question

In process control, sample ranges may be used to approximate sample standard deviations

Quizplus · Accepted Answer

Sample ranges can be used to estimate the standard deviation in process control, specifically for cases where the process is stable and under statistical control. This is done by using the relationship between the range and standard deviation for a normal distribution, which allows for a rough approximation of the standard deviation based on the range of values in a sample. However, this is only an approximation and may not be accurate in all cases.

In Process Control, sample Ranges May Be Used to Approximate