Actual rather than standardized spec values in capability boxplots

kennedy3

This is probably a simple one, but for some reason I can't find the answer on my own.  When I generate a capability boxplot, the x-axis is always a standardized spec.  That's useful to have when I have different specifications but I want to compare performance, but much of the time I have the same specification for an entire analysis.  When I present the results, my audience is often confused since my control limits are always -.5 to .5 rather than the measurements they're used to seeing.  Is there some way to turn off the standardized numbers?

 

Peter_Bartell

I'm a little confused by the phrase "...my audience is often confused since my control limits are always -.5 to .5 rather than the measurements they're used to seeing." Since control limits don't usually come into the conversation when presenting process capability analysis results. One way you can come close to getting spec limits on a box plot is in the Distribution Platform's Capability Analysis submenu. If you add the spec limits and keep the histogram visible in the window, with the box plot shown above the histogram, the spec limits, while they don't extend all the way into the geography of the box plot, they are plotted at the appropriate positions for the x axis of the histogram which also extends up to the box plot.