Formula Fueler Design Of Experiments Class Exercise
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There are alternative ways to teach DOE besides using the Statapult (Six Sigma Academy's favorite contraption which cost $300). A $20 toy made by Mattel is an effective teaching aid to full-factorial and fractional DOE's.
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Formula Fueler Design Of Experiments Class Exercise
- 1. Design For Six Sigma DOE – Full Factorial Designs Class Exercise: Formula Fuelers ®
- 5. Setting-up the Experiment A = 1 part coffee + 1 part water B = 1 part juice + 2 parts water C = soda (e.g. Sprite ® ) Liquid
- 8. Setting-Up the Experiment in Minitab
- 9. Setting-up the Experiment in Minitab
- 10. Treatments: How Much of Each Liquid? A B C A ml B ml C ml Total ml -1 -1 -1 0 0 0 0 1 -1 -1 6 0 0 6 -1 1 -1 0 6 0 6 1 1 -1 3 3 0 6 -1 -1 1 0 0 6 6 1 -1 1 3 0 3 6 -1 1 1 0 3 3 6 1 1 1 2 2 2 6
- 11. Launching the Motorcycle Push this power button. There will be a 2 second delay.
- 12. Response Variable: Measuring Distance Note: Motorcycle may not follow a straight line! Top View of Motorcycle Measure distance from start position to center of front-wheel to the closest 0.25 inch Starting Position
- 14. Team Roles: Who Does What? Task 2 People 3 People 4 People Pick up motorcycle and remove fuel tank Person 1 Person 3 Person 1 Open cap and pour out the contents in the fuel tank Person 1 Person 1 Person 1 Collect samples of each liquid as specified per observation Person 1 Person 1 Person 2 Pour mixture into fuel tank and close the cap Person 1 Person 1 Person 2 Insert fuel tank into motorcycle Person 2 Person 1 Person 2 Position motorcycle on the floor in starting position Person 2 Person 2 Person 3 Press the power button and wait 2 seconds Person 2 Person 2 Person 3 Watch the vehicle run. Make sure it doesn't hit anything. When the it stops, take a measurement of how far it traveled Person 2 Person 3 Person 1 Enter the results into Minitab Person 2 Person 3 Person 4
- 15. Example of Experiment Data Collected
- 16. Analyze Results
- 17. Analyze Results
- 18. Analyze Results
- 19. Factorial Fit: DistInches versus Factor A, Factor B, Factor C Estimated Effects and Coefficients for DistInches (coded units) Term Effect Coef SE Coef T P Constant 86.91 0.3652 237.98 0.000 Factor A 47.19 23.59 0.3652 64.61 0.000 Factor B 47.02 23.51 0.3652 64.38 0.000 Factor C -22.85 -11.43 0.3652 -31.29 0.000 Factor A*Factor B -20.35 -10.18 0.3652 -27.87 0.000 Factor A*Factor C -5.23 -2.61 0.3652 -7.16 0.000 Factor B*Factor C -3.81 -1.91 0.3652 -5.22 0.000 Factor A*Factor B*Factor C 60.06 30.03 0.3652 82.24 0.000 S = 1.78900 R-Sq = 99.91% R-Sq(adj) = 99.86% Analysis of Variance for DistInches (coded units) Source DF Seq SS Adj SS Adj MS F P Main Effects 3 29759.6 29759.6 9919.9 3099.45 0.000 2-Way Interactions 3 2737.0 2737.0 912.3 285.06 0.000 3-Way Interactions 1 21645.0 21645.0 21645.0 6762.97 0.000 Residual Error 16 51.2 51.2 3.2 Pure Error 16 51.2 51.2 3.2
- 20. Analyze Results
- 21. Analyze Results
- 22. Do Any of the Lines Intersect?
- 23. Which Factor Has the Steepest Slope?
- 24. Cube Plots: Determine Settings to Meet Goal