An inspector visually inspects 200 sheets of paper at a time

An inspector visually inspects 200 sheets of paper at a time for aesthetics. Using trained judgment, the inspector will either accept or reject sheets based on whether they are flawless.

Following are the results of recent inspections:

Sample       1    2       3   4    5     6    7   8    9   10

Defectives 10    15    12    14   26   3   10 14 12   11

a. Given these results, using a p chart, determine if the process is stable.

b. What would need to be done to improve the process

Solution