IR chart 4 sigma control limits

[#1]

Hi,

When we make a IR control chart the UCL and LCL are based on 'mean + 3 sigma' limits. Is there anyway to increase the limits to 'mean + 4 sigma'?

thanks

[#2 · Accepted solution]

Hello,

When you are setting up your control chart in the dialog box you can specify the "Ksigma" in the Parameters box in the lower left corner.  

HTH