Thanks for the comments and happy to hear you have successfully applied the ideas discussed above in your work.
Dotted/dashed lines .... In all these years I'd never paid much attention to the process limits being solid or dashed. I see in Shewhart's 1931 and 1939 books they are dashed. My main focus, or concern, has tended to be that the two voices (process & customer) are understood, i.e. why they are different and what they represent.
Thanks for the comments and happy to hear you have successfully applied the ideas discussed above in your work.
Dotted/dashed lines .... In all these years I'd never paid much attention to the process limits being solid or dashed. I see in Shewhart's 1931 and 1939 books they are dashed. My main focus, or concern, has tended to be that the two voices (process & customer) are understood, i.e. why they are different and what they represent.