Objective: You recommend using a design of experiments approach to hopefully realize a breakthrough improvement. The team brainstorms a long list of possible reasons why the wait times are so long. From that list, the team has reduced it down to 5 factors they want to include in an experiment. They do not suspect any interactions, so they conclude a resolution III will be adequate. They refer to the resolution matrix (in Analyzing Fractional Factorial Designs Lecture - Part 2 in your notebook) and they find they can learn about the effects of those five factors in as little as 8 experiments. Instructions for you: Construct an main effects plot for all five of the factors. We will do the first one for you as an example: Take an average of the wait time minutes (y) when "staff size" was at (-). Then, do the same thing for when the results (y) when "staff size" was at (1). When at (-1) When at (+1) 7 9 28 25 26 8 6 28 Average 16.75 17.50 Data: The factors for the experiment were: A B C D E Staff size Order of treatment Method of treatment Tracking software Temp. in the waiting room - level 8 FIFO Iterative Product A 68 degrees + level 16 By priority All at once Product B 75 degrees The design below was taken from Minitab. There are other software packages that provide the same information. There can also be found in Design of Experiments textbooks. Trial 1 2 3 4 5 6 7 8 Staff sz 1 -1 1 -1 -1 1 1 -1 Order 1 -1 1 -1 1 -1 -1 1 3 Method Software Rm temp Results (Y) (patient wait time measured in minutes) -1 -1 -1 9 Excel 2003 Tip -1 1 1 7 1 1 -1 25 Excel 2007 Tip 1 1 -1 28 1 -1 1 26 -1 1 1 8 1 -1 -1 28 -1 -1 1 6 -5 77 -1 -43 How to submit an Assignment TARGET ASSIGNMENT DATE - Submit in Week 12 or earlier YOU DO NOT NEED TO SEND IN THE MAIN EFFECTS PLOTS Project: Healthcare Project Deliverable: DOE Student last name: REPORT ALL OF THE RESULTS TO AT LEAST 2 DECIMAL PLACES! Staff size - ::::: 16.75 Staff size + ::::: 17.50 Treatment order 17.75 Treatment order + ::::: 16.50 Method 7.50 Method + ::::: 26.75 Software 17.25 Software + ::::: 17.00 Room temp 22.50 Room temp + ::::: 11.75 What would you do next? Check Check Check Check Check Check Check Check Check Check