Fujiyama Electronics Case Study

Fujiyama Electronics Case Study - limits and related charts...

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1. Center Lines, CL : = 5.100; CL R : = 1.083 Control limits for the - chart are: ± A 2 = 5.100 ± 0.729 (1.083) = 4.31 to 5.89 For the R-chart: UCL R = D 4 = 2.282 (1.083) = 2.47 LCL R = D 3 = 0 2. R-Chart 0 0.5 1 1.5 2 2.5 3 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 Sample number Ranges Ranges Lower control limit Upper control limit Center line 3. We can see from the above - chart that points 19 and 21 are out of control and the R- chart shows point 18 is out of control on the range. We obtain the following control
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Unformatted text preview: limits and related charts after dropping these 3 points: 4a. New Center Lines: Center Lines, CL : = 5.037; CL R : = 1.057 Control limits for the - chart are: ± A 2 = 5.037 ± 0.729 (1.057) = 4.266 to 5.808 For the R-chart: UCL R = D 4 = 2.282 (1.057) = 2.412 LCL R = D 3 = 0 4b. 5. The and R-charts now show that the process is in control....
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This note was uploaded on 03/01/2012 for the course ACCOUTNING 550 taught by Professor Abner during the Spring '11 term at DeVry Houston.

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Fujiyama Electronics Case Study - limits and related charts...

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