J
Hi, there
My company has 3 shift, now we collected 3 weeks data about product( continuous data and collecting once hours), Now we want to draw control chart to see if process is stable.
The question is we can get several charts by different subgroup, such as by hour, by operator, by day, by shfit etc. And some charts appeared stable, some appeared unstable. Does anybody can tell me which chart I can use? thanks
Michael
My company has 3 shift, now we collected 3 weeks data about product( continuous data and collecting once hours), Now we want to draw control chart to see if process is stable.
The question is we can get several charts by different subgroup, such as by hour, by operator, by day, by shfit etc. And some charts appeared stable, some appeared unstable. Does anybody can tell me which chart I can use? thanks
Michael