Control charting

[JRH]

How did I build a true control chart that has the mean in the middle, the
control limits; mean +-2(stdev) and mean +-3(stdev), see
below. I have attempted to use both scatter and line charts and then
manipulate the axis, but that only works for the X and Y axis and does not
give me the mean line or control limits on the right. Ideas? I'm sure that
I'm making this more difficult than I need....

mean+2(stdv)30.1
mean-2(stdv)13.3
Mean 21.7
mean+3(stdv)34.3
mean-3(stdv)9.1

Day # treated
1 25
2 19
3 17
4 15
5 20
6 24
7 30
8 19
9 16
10 23

Thanks
- Jeff

 

[Andy Pope]

Hi,

Take a look at Jon's example.
http://peltiertech.com/Excel/Charts/RunChtLines.html

Cheers
Andy