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Level II

Constant control limits over Phases in Xbar charts

Using JMP on Windows XP:

I'm trying to generate xbar charts with constant control limits over numerous phases. The following code snippet will shows how I am currently doing this, but to add a phase requires changing the code. I just want constant control limits over all phases. Is there something I can do within the xbar chart or should I start thinking about this differently?

Control Chart(
Phase( :Phase ),
Sample Label( :Batch ),
Chart Col(
Phase Level( "Phase Level 1", LCL( 1 ), UCL( 3 ) ),
Phase Level( "Phase Level 2", LCL( 1 ), UCL( 3 ) ),
Phase Level( "Phase Level 3", LCL( 1 ), UCL( 3 ) ),
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