topic IR chart 4 sigma control limits in Discussions

IR chart 4 sigma control limits

tahirawan11 — Wed, 06 Jun 2018 09:39:13 GMT

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

Bill_Worley — Wed, 06 Jun 2018 12:33:00 GMT

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