Setting SPC control limits based on an initial set amount of data points in JMP?

[#1]

Hi fellow JMP users. 

In Minitab when I wanted to set the Control limits for an SPC chart based on the first "x" amount data points (e.g. 10) I could do this very easily using the 'stage' feature. Any future data points over and above the initial stage would retain these control limits.

Being relatively new to JMP I was curious how setting the control limits based on the first "x" amount of data points is best achieved. 

Can anyone advise?  Many thanks.

[#2 · Accepted solution]

There are multiple ways to accomplish this.  I suggest starting with the Excluded Row State method.  It is the 4th method detailed in this blog post.

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