81
•
To determine the process width, Six Sigma practitioners defined any process’s effective limits as three standard deviation limits from the average. Ina normally
distributed population, 99.73% of the variation is within ± s of the Process Average and therefore considered as process width.
• C
p only compares the width of specification
and process therefore, any change of process average isn’t
accounted for in Cp.
Share with your friends: