Silk Sonic Pizza shop collects data on the number of errors (i.e., defects) in pizza orders. The
Question:
Silk Sonic Pizza shop collects data on the number of errors (i.e., defects) in pizza orders. The errors are not defined beforehand, and can include a wide variety of issues such as incorrect toppings, incorrect address, discount coupon not applied, special seasoning packet missing, etc. The data provided below gives the number (or count) of errors noted in samples of 100 orders each taken daily for 10 days. Shop owner, Finneas, has requested your help to develop a Count (c) control chart to track the process.
Day | Errors (Defects) |
1 | 14 |
2 | 7 |
3 | 8 |
4 | 16 |
5 | 38 |
6 | 15 |
7 | 6 |
8 | 19 |
9 | 11 |
10 | 6 |
(1) Please help Finneas by calculating and reporting, the value for theCenter Line(rounded to thenearestwhole number) of the Count (c) control chart.
(2) Please calculate and report the value for the Upper Control Limit (UCL) (rounded to the previous whole number) and the Lower Control Limit (LCL) (rounded to the next whole number) of the Count (c) control chart.