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Related Links: Quality Statistics Explained Page Exponentially Weighted Moving Average Explanation Page

Data is a single column of values Mean and Standard Deviation are those expected when in control Weighting Factor λ is the weight for each data value (range :0 to 1)

Lucas JM and Seccicci MS (1990) Exponentially Weighted Moving Average Schemes : Properties and Enhancements. Technometrics 32:1 p. 1-12