Share
Explore BrainMass

Western Electric runs rule

See attached for data.

1. A Lean Six Sigma black belt project results in a lower defective rate at the final inspection of a plastic molded component. Thirty days of data presented in the following table.

(a) Create the appropriate control chart for the improved process. Apply only Western Electric runs rule 1 for determining non-random patterns. Assume any p estimate that violates Western Electric runs rule 1 has an assignable cause, omit it from the next control limit estimate, and repeat this process plotting a control chart until all p estimates are in control.

(b) Based on the characteristics of the Phase 1 control chart, discuss the design of a control chart for Phase 2 future production.

Attachments

Solution Preview

Please see the 2 p charts in the mintab file

1. A Lean Six Sigma black belt project results in a lower defective rate at the final inspection of a plastic molded component. Thirty days of data presented in the following table.
a) Create the appropriate control chart for the improved process. Apply only Western Electric runs ...

Solution Summary

The expert examines Western Electric runs rule. An appropriate control charts for the improved process is determined.

$2.19