2 Replies Latest reply on Jul 23, 2013 2:10 PM by Marc Fernandes

    Western Electric Rule

    Phillip Stehman

      I am trying to add a Western Electric to my control chart.  I have successfully created change "Zones" where significant changes have occurred.  A new zone is created whenever the line rises or falls in six points consecutively.  I need to be able to calculate the mean and standard deviations only within these zones.  Any Ideas?