I have a simple Y vs X graph that the upper limit and lower limit are changing at different X values. Does anyone know how to do this on Graph Builder? or if there's a better way to do it?
This looks like an UWMA control chart. You can get something like this in Graph Builder if you make the limits of X another series along with the actual data. Here's what the result looks like.
I made the series for the upper and lower limits and simulated data, then I stacked them to get them into a single column with labels. See the attached data tables.