Browsing Washburn Faculty Research by Subject "3 sigma limits"
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Globalizing Statistical Process Control and Restoring Shewhart's Methodology (Washburn University. School of Business, 2012-09-1)Many of the operations management texts present statistical process control (SPC) in a similar manner. Control charts occur in three separate formats: xbar-charts and r-charts for variables, p-charts for attributes, and ...