7 Replies Latest reply on Aug 23, 2016 8:03 PM by Andrew Hill

    Six sigma control charts

      I'm wondering if anybody would be willing to share an example of how they have implemented control charts in Tableau?

       

      You know, those run charts (time series) where you add a horizontal line showing the mean, upper limit and lower limit based on 3 sigmas (standard deviations) above and below the mean respectively.

       

      The point is of course that when you monitor processes with frequent updates to check that they are stable (within the limits) and in case they become unstable, then highlight any data outside the limits. This allows you to focus your attention to the 'true' anomalities and not the kind of variation that is insignificant or should be expected.

       

      Any ideas appreciated!

       

      Thanks

       

      Albert