Exercise 14

Section 7 CUSUM Charts

Lesson S07-04

Text: Section 7 page 12 and Section 9 pages 23 – 24

Duration: 8 minutes

Introduction to Exercise 14

The process being monitored has a target value of 35. If the process average hits 32, we want to detect the change. The estimated standard deviation is 2.36.

Please fill in the missing values on the worksheet (optional) and determine whether the process is in or out of control. If the process is out of control, provide the sample number where it was detected and provide the sample number where the process likely began the drift. The data can be found in Exercise14.MTW.

Solution / Discussion of Exercise 14

CUSUM Summary