Control chart builder: why is LCL =Avg = UCL when a time axis is added?
When building a run chart in control chart builder and I drag the parameter onto the y-axis, I get correct spec limits and standard deviation. As soon as I drag the time column on the x-axis (subgroup), LCL equals Avg equals UCL. Why? Is there a way to have the time/date on the x-axis and still get a result? I've attached a screen record to demonstrate the issue. Note, too, that the h:min:s turn t...
caroljackson
vince_faller