create SPC chart with 3 sigma Upper/Lower control limit

D

Daniel

Hi all
How can I create a Statistic Process Control chart with 3 sigma Upper
control limit
and 3 sigma Lower control limit. The chart must be updated with new data.
For example sale vs month chart for sale department and I know some data for
last year.
Must be some where have this tutorial please respond with the link.
Thks
Daniel
 

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