Understanding Weighted Moving Average Charts for Process Monitoring
Weighted moving average charts are powerful tools for detecting small shifts and trends in process means. By utilizing Uniformly Weighted Moving Average (UWMA) charts and Exponentially Weighted Moving Average (EWMA) charts, organizations can monitor and identify changes in process means with precisi
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Understanding the Limitations of Shewhart Control Charts in Process Monitoring
Shewhart control charts, while effective for detecting larger process shifts, have limitations in detecting smaller shifts due to relying on individual sample observations. This can be a drawback in phase II process monitoring scenarios where smaller shifts are of interest. Alternatives like the cum
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Understanding Exponentially Weighted Moving Average Control Charts
Exponentially Weighted Moving Average (EWMA) control charts offer an effective alternative to Shewhart control charts for detecting small shifts in processes. This article explores the definition, properties, and calculations involved in EWMA control charts, providing insights on using this method i
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