Suppose you’re using an x-bar and R chart. Your limits for the x-bar portion are
ID: 423729 • Letter: S
Question
Suppose you’re using an x-bar and R chart. Your limits for the x-bar portion are 98 and 102. Your limits for the R portion are 5 and 11. In a series of 5 samples you observed the following Ranges: 9, 12, 7, 7, 9. The means of those same 5 samples were: 100, 101, 101, 99, and 100. What would you conclude:
A There is some assignable variation that has resulted in a change in the process range
b The process is now producing defective (non-conforming) items because the mean has shifted.
c The process is not capable
d The process is in control
E There is some assignable variation that has resulted in a change in the process average
A There is some assignable variation that has resulted in a change in the process range
b The process is now producing defective (non-conforming) items because the mean has shifted.
c The process is not capable
d The process is in control
E There is some assignable variation that has resulted in a change in the process average
Explanation / Answer
Question:- Suppose you’re using an x-bar and R chart. Your limits for the x-bar portion are 98 and 102. Your limits for the R portion are 5 and 11. In a series of 5 samples you observed the following Ranges: 9, 12, 7, 7, 9. The means of those same 5 samples were: 100, 101, 101, 99, and 100. What would you conclude:
Answer:- (E) There is some assignable variation that has resulted in a change in the process average.
If there would beany assignable variation then it will definately effect the process average and resulted in change in the process average.