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Steven_Moore
Level VI

Run Charts

Perhaps I am missing something in the Run Chart platform?  After producing a run chart, where is the analysis such as tests for clusters, trends, mixtures, oscillation, etc (with p-values).?

Steve
1 REPLY 1

Re: Run Charts

I just had a customer ask me this same question - overall in JMP we use Westguard and Western Electric rules and circle the points rather than use general p-values like Minitab. Test info is further down in this post.

 

Control charts can be done in the Control Chart Builder (Analyze -> Quality and Process -> Control Chart Builder). This is an interactive drag and drop control charting platform. There is a control panel on the left that will let us control different aspects of what we see, for example individual points versus the mean per x grouping variable.
 
The documentation goes through a few examples:
 
Here’s a description of the charts available:
and also here:
 
JMP uses Western Electric/Nelson rules (Test 1-8), testing beyond limits, and Westguard rules - the points that trigger these alerts are circled. Tests are described fairly well. So rather than getting just a p-vlaue like in Minitab, you will see the points circled with the test beside it. 
 
Also, we can create custom tests, for example:
 
Here are a few resources to help you use JMP:
Online documentation: (also built in under the help menu): http://www.jmp.com/support/help/13/Control_Chart_Builder.shtml#
Learning Library - short 1 page pdfs and videos: https://www.jmp.com/en_us/learning-library/quality-and-process.html
 
This is a general guide for moving to JMP from Minitab: