topic Re: Setting Control limits manually for Level Jennings chart in Discussions

Setting Control limits manually for Level Jennings chart

atrayeepaul10 — Tue, 13 Sep 2016 20:34:15 GMT

Presently trying to manually set the control limits in Levey Jennings control chart since my data has a natural limit of LCL = 0. Can you please suggest how can I do it in JMP Pro 12?

Re: Setting Control limits manually for Level Jennings chart

txnelson — Tue, 13 Sep 2016 20:54:20 GMT

right mouse click on the column of interest and select

Column Properties==>Control Limits

Then select Levey Jennings

and then set your LCL

Re: Setting Control limits manually for Level Jennings chart

atrayeepaul10 — Tue, 13 Sep 2016 23:10:48 GMT

Hi Jim,

Thank you for the solution

I have selected the CL, LCL and UCL columns and put in the following information as you have mentioned above

CL = 28907525.70

LCL = 0

UCL = 3648261306.71

But when I am clicking on Analyze<Quality and Process<Control Chart<Levey Jennings Control chart it is not taking my set limits. Can you please tell me where I am going wrong?

Re: Setting Control limits manually for Level Jennings chart

txnelson — Wed, 19 Oct 2016 04:02:08 GMT

Is it possible that you set the UCL and LCL for XBar, or C Chart, etc. rather than for the Levey Jennings? I used the Semiconductor Capability data table from the Sample data tables, and set the Levey Jennings LCL to 0 and the UCL to 120 and then ran the Control Chart platform for Levey Jennings, and got the following results:

Re: Setting Control limits manually for Level Jennings chart

emdwright — Mon, 27 Aug 2018 18:52:43 GMT

What if your limits keep changing and climbing with each point? An example could be rheometer data; hydration vs. time. I need to set my limits using a column of data for both upper and lower. thanks!

Re: Setting Control limits manually for Level Jennings chart

tonya_mauldin — Thu, 30 Aug 2018 13:34:29 GMT

You can use a phase variable and a limits data table. Details can be found in the following blog post.

https://community.jmp.com/t5/JMPer-Cable/4-ways-to-use-fixed-baseline-historical-control-limits-in/ba-p/33223

Re: Setting Control limits manually for Level Jennings chart

emdwright — Wed, 19 Sep 2018 20:31:39 GMT

Thank you Tonya, that is exactly what I was looking for. I am excited to circle back soon and try it!