【正文】 The National Graduate School of Quality Management ? 131 Bowling Example (continued) ?Select C8 as your response variable. ?Select “Wristband”, “Ball” and “Lane” as your factors. ?Then select “OK” and OK again on the next screen…. 169。The National Graduate School of Quality Management ? 127 Bowling Example (continued) ?Select C8 as your response ?Select “Wristband”, “Ball” and “Lane” as your factors. ?Then select “OK” and OK again on the main screen. 169。The National Graduate School of Quality Management ? 123 Bowling Example (continued) Select your Effects Plots and reset your Alpha to .05. Select OK to return to the main screen and then select OK again. 169。The National Graduate School of Quality Management ? 119 Bowling Example (continued) Minitab has now designed our experiment for us…. Now, type your Data from each of your experimental treatments into C8. We are now ready to analyze the results… 169。The National Graduate School of Quality Management ? 115 Bowling Example (continued) We can now see the available experimental designs…. We will be using the Full (Factorial) for 3 factors and we can see that it will require 8 runs… Now, select OK and go back to the main screen. Once at the main screen select Designs... 169。The National Graduate School of Quality Management ? 111 Analyzing Main Effects.. Li t er s / H r 3Li t er s / H r 2Li t er s / H r 12221201918F o rm u l a t i o nLiters Per HMain Effects Plot Data Means for Liters Per HFormulation 1 Has Lowest Fuel Consumption 169。The National Graduate School of Quality Management ? 107 ?Choose boxplots of data... ?Then OK Set up the analysis…. 169。The National Graduate School of Quality Management ? 103 ANalysis Of VAriance ANOVA 169。The National Graduate School of Quality Management ? 99 Entering the data…. ?Enter the data in a table format. For this example, load the file Contingency ... 169。The National Graduate School of Quality Management ? 95 Paired Comparison ?Select the samples… ?Go to Graphs…. 169。The National Graduate School of Quality Management ? 91 ?The dotplot shows how close the datapoints in the two populations fall to each other. The close values of the two population means (indicated by the red bar) also shows little chance that this hypothesis could be rejected by a larger sample Interpreting the results…. 169。The National Graduate School of Quality Management ? 87 Lets test the data with a 2 Sample t Test ?Under Stat… Basic Statistics…. We see several of the hypothesis tests which we discussed in class. In this example we will be using a 2 Sample t Test…. ?Go to Stat…. Basic Statistics.. 2 Sample t….. 169。The National Graduate School of Quality Management ? 83 ?Select both of the available columns (Before and After) to stack.... ?Type in the location where you want the stacked data…. In this example we will use C4…. ?Type in the location where you want the subscripts stored… In this example we will use C3…. ?Select OK…. Checking for equal variance.. 169。The National Graduate School of Quality Management ? 79 Checking the Data for Normality…. ?It’s important that we check for normality of data samples. ?Let’s see how this works…. ?Go to STAT…. Basic Statistics... Normality Test…. 169。The National Graduate School of Quality Management ? 75 Select “Torque” for our single data column... Enter a lower spec of 10 and an upper spec of 30. Then select “OK”…. SETTING UP THE TEST…. 169。The National Graduate School of Quality Management ? 71 Minitab Statistical Tools 169。The National Graduate School of Quality Management ? 67 Scatter plot.... Now we can see both Scatter plots of the data… 169。The National Graduate School of Quality Management ? 63 Scatter plot.... ?Go to: ?Graph… ?Plot... 169。The National Graduate School of Quality Management ? 59 Boxplot.... ?There is another way we can use Boxplots to view the data... ?Go to: ?Graph… ?Boxplot... 169。The National Graduate School of Quality Management ? 55 Boxplot.... ?Go to: ?Stat… ?Basic Statistics… ?Display Descriptive Statistics... 169。The National Graduate School of Quality Management ? 51 Histogram.... ?Go to: ?Graph… ?Marginal Plot… 169。The National Graduate School of Quality Management ? 47 Histogram.... Fill out the screen as follows: ?Select GPA for our Variable…. ?Select Graphs….. 169。The National Graduate School of Quality Management ? 43 Histogram.... ?Go to: ?Graph… ?Histogram… 169。The National Graduate School of Quality Management ? 39 Pareto Chart.... ?Go to: ?Stat… ?Quality Tools… ?Pareto Chart…. 169。The National Graduate School of Quality Management ? 35 Transferring the Analysis... ?Well we got our data, but it is a bit large….. ?Reduce the font to 12 and we should be ok….. 169。The National Graduate School of Quality Management ? 31 Transferring the Analysis... ?Select “Picture (Enhanced Metafile)… This will give you the best graphics with the least amount of trouble. 169。The National Graduate School of Quality Management ? 27 Use Minitab to do the Analysis... ?Now click in the Predictor (X): box…. Then click on “Predicted Workload” and hit the select button… This will fill in the “Predictor (X):” data field... ?Both data fields should now be filled…. ?Select OK... 169。The National Graduate School of Quality Management ? 23 Move to Minitab... Open Minitab and select the column you want to paste the data into…. 169。The National Graduate School of Quality Management ? 19 Mi