Question

The overall average on a process you are attempting to monitor is 50 units. the average range is 4 units. the sample size is 5. What are the upper and lower control limits of a 3 sigma mean chart.A. ( i already did this)Upper control limit is 52.31 and the lower is 47.69.B. What are the upper and lower control limits of 3 sigma range chart??

Answer 1

The answer and procedures of the exercise are attached in the following archives.

Explanation

You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.