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© 2010 ASQ. All Rights Reserved. 2 About this Module You are the coach for the Green Belt doing the Brazil DDC project. He is planning to conduct a DoE This is his first DoE so he has asked you for help filling out the DoE planning sheet.

© 2010 ASQ. All Rights Reserved. 3 Where He Is So Far He indicates that he has completed the form as far as he can go without your help. (DoE Plan DDC.doc). He also indicates he has budget approval for 16 runs. What would you recommend and why?

© 2010 ASQ. All Rights Reserved. 4 Determining the Factors From the Pareto we know the four leading causes to test those we decided to use the following factors 1.Number of orders 2.Route in minutes 3.Truck loading time 4.Release time

© 2010 ASQ. All Rights Reserved. 6 The Viable Options A full factorial design without replication –Advantage No alias or confounding –Disadvantage No measure of error (saturated model) if all main effects and interactions are significant A half faction factorial design with two replicates –Advantage The replication provides a measure of error –Disadvantage Aliasing may be difficult for an inexperienced Green Belt to understand and fully explain

© 2010 ASQ. All Rights Reserved. 7 Design Choice Consensus was a full factorial design with the factor levels set at. 1.Number of orders1732 2.Route in minutes 5673 3.Truck loading time5.57.5 4.Release time 3 9 Complete the DoE Matrix

© 2010 ASQ. All Rights Reserved. 9 Analyze the Data The experiment was performed and the data saved in DDC DoE.mtw Analyze the data and prepare to present the results

© 2010 ASQ. All Rights Reserved. 17 Check the Residuals The residuals are normally distributed with a mean of zero and constant variance. No reason to reject the model.

© 2010 ASQ. All Rights Reserved. 20 Optimizer Output Non delivered orders are minimized by using the lower route time and lower release time. The model shows we should be able to achieve an average of ~2.5 non delivered orders.

© 2010 ASQ. All Rights Reserved. 22 Session Window Source DF Seq SS Adj SS Adj MS F P Route in Min 1 537.08 537.08 537.08 99.43 0.000 Release Time in Min 1 312.41 312.41 312.41 57.83 0.000 Error 13 70.22 70.22 5.40 Total 15 919.71 Remove the spaces that are interior to the column and source names.

© 2010 ASQ. All Rights Reserved. 23 Prepare to Graph Source DF SeqSS AdjSS AdjMS F P RouteinMin 1 537.08 537.08 537.08 99.43 0.000 ReleaseTimeiMin 1 312.41 312.41 312.41 57.83 0.000 Error 13 70.22 70.22 5.40 Total 15 919.71 Your session window should like like this. Copy this data excluding the total row to the clipboard then paste starting in the title row of the worksheet.