http://peltiertech.com/Excel/Charts/RunChtLines.html
Change the formulas to get ±3 SD instead of ±SD.
- Jon
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Jon Peltier, Microsoft Excel MVP
Tutorials and Custom Solutions
Peltier Technical Services, Inc. -
http://PeltierTech.com
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"Daniel" wrote in message
...
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