Dear QM gurus,
In the control charts which we get thru QGC1/2/3, can we set a 3 sigma limits ?
My customer wants the chart to be setup so that they can plot with 3 limits +/- with target line.
At the moment I can see in the chart is that limits can be changed only as below
upper action limit
upper warning limit
target
Lower warning limit
Lower action limit
Im looking for 1 more limit up and down, is this possible ?
Thanks
Mudassar
Ok.. I'm not a statistical guru but I think you mixed terms. Maybe Martin can weight in on this one.
When you want 3 sigma limits it means that you want multiple limit calulated as a wider range, say as opposed to 2 sigma or 1 sigma and is related to the number of standard deviations.
When you specify warning limits and action limts you are specifying values at which you want something done. You have two now.. and you are asking that you add a third? How many warnings do your operators need? ðŸ˜‰
Craig
Add a comment