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Unformatted text preview: 0.02500 0.03000 5 10 15 20 25 30 S bar CL=0.01029 S bar UCL S bar LCL S bar Average F) The X bar chart was in control. It did not oscillate 14 times up and down and it did not have 7 consecutive points all down or up as well as 7 consecutive points above or below the control line. However the S bar chart was out of control because the entire average was somehow all under the control line, therefore 7 consecutive points were below the line so it was out of control. Therefore the entire process was out of control because the variance chart was out of control....
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This note was uploaded on 05/03/2008 for the course I E 424 taught by Professor Wilck,josephchandra,mjeya during the Fall '07 term at Pennsylvania State University, University Park.
- Fall '07