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# lab 5 - 0.02500 0.03000 5 10 15 20 25 30 S bar CL=0.01029 S...

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X bar Control Chart 73.900 73.910 73.920 73.930 73.940 73.950 73.960 73.970 73.980 73.990 74.000 74.010 74.020 74.030 74.040 74.050 74.060 74.070 74.080 74.090 74.100 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Number of Samples Inside Diameter of rings CL=74.001 UCL (moving) LCL (moving) Sample Average Bryan Werner Class ID 96 A)I will use the S bar chart because the sample size varies between batches. B)Based on the x bar equation, simply going through Excel and creating an equation yielded a CL of 74.001 C) Again, setting up an equation in Excel it yielded a s bar value of 0.0103 E) S bar control chart 0.00000 0.00500 0.01000 0.01500 0.02000

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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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