Q. Compute X-Bar-Bar, R-Bar also associated control limits using the data in the table above.
Create X-Bar•R (Average & Range) Control Charts from the data in table above.
Discuss notable out-of-control conditions displayed in the completed X-Bar•R (Average & Range) Control Charts. Only consider points outside the Control Limits. Do not consider runs, set of points within certain zones, etc.
If the conditions you note could be defined as assignable conditions also they are removed from the process, illustrate what will happen to the X-Bar•R Control Chart?
(a) Remove the data related to the out-of-control points you observed from the original data also re compute a new X-Bar-Bar, R-Bar also associated control limits.
(b) Create new X-Bar•R (Average & Range) Control Charts from your updated data.
Discuss Elucidate how the two sets of Control Charts are different. Illustrate what has changed?