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Detecting Small Shifts in Your Process ( US 2018 134 )

Ryan_Gilmore

Level: Intermediate
Annie Dudley Zangi, JMP Senior Research Statistician Developer, SAS
Tonya Mauldin, JMP Senior Analytics Software Tester, SAS

Cumulative sum, or CUSUM control charts, are well established as being more efficient in detecting small shifts than Shewhart charts. However, the V-mask in CUSUM charts can be more challenging to interpret than in traditional control charts. In this talk, we will present examples that illustrate how the new CUSUM charts can detect small shifts in the mean that are undetectable in Shewhart charts. We will also preview the new CUSUM Control Chart platform options and compare chart efficiencies with average run lengths.

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