Factorial Experiment A study for a machining operation was conducted to determine the effect of DEPTH OF CUT and FEED RATE on the SURFACE FINISH of a part. The goals of the study were to determine significant factors and to identify the machine settings (i.e., factor levels) that produces the best surface finish, which is indicated by lower response values. Use this information to analyze the experiment and answer the questions on this page. Analysis of Variance Source Feed Rate Depth of Cut Feed Rate Depth of Cut Error Total DF Adi SS Adi MS F-Value P-value 2 1239.1 619.53 25.69 0.000 3 2240.6 746.85 30.98 0.000 6 612.3 102.05 4.23 0.005 24 578.7 24.11 3546706 Grouping Information Using the Tukey Method and 95% Confidence Depth of Cut N Mean Grouping Feed 0.25 9 95.4444 A Rate Depth of Cut N Mean 0.20 9 94.7778 A Grouping 0.18 9 83.5556 0.010 0.20 3 103.667 A B 0.15 0.008 0.20 3 9 76.6667 98.667 AB 0.008 0.25 3 97.000 AB Feed Rate N 0.005 0.25 3 Mean Grouping 96.333 ABC 0.010 0.010 0.25 3 12 92.8333 A 93.000 A B C D 0.010 0.18 3 0.008 12 90.5833 A 89.333 A B C D 0.005 12 79.4167 0.008 0.18 3 88.000 B B C D 0.0100.15 3 85333 B C D E 0.005 0.20 3 82.000 C D E 0.008 0.15 3 78.667 DEF 0.005 0.18 3 73333 EF 0.005 0.15 3 65.000 F Question 8 (2 points) Saved Assuming that lower values of surface finish are better, to the following: 1. Make a recommendation for the best DEPTH OF CUT and FEED RATE to use in this machining operation. 2. Cite evidence from the Tukey comparisons and factor plots you indicated were appropriate to interpret. 3. List all other combinations of DEPTH OF CUT and FEED RATE that are not statistically different from the one you specified in the first part of this question. Format v BI U 1. EQ Question 9 (2 points) Saved Now assume that any SURFACE FINISH "better than 100.0 is acceptable AND that the company wants to use the greatest DEPTH OF CUT and FEED RATE possible (because it will result in the company making the parts faster). Do the following: 1. Explain why this new information could change your recommendation in the previous question. 2. Make a new recommendation for DEPTH OF CUT and FEED RATE and explain your rationale for the choice by citing information from the Tukey comparisons (state which comparison(s) you are interpreting). Factorial Experiment A study for a machining operation was conducted to determine the effect of DEPTH OF CUT and FEED RATE on the SURFACE FINISH of a part. The goals of the study were to determine significant factors and to identify the machine settings (i.e., factor levels) that produces the best surface finish, which is indicated by lower response values. Use this information to analyze the experiment and answer the questions on this page. Analysis of Variance Source Feed Rate Depth of Cut Feed Rate Depth of Cut Error Total DF Adi SS Adi MS F-Value P-value 2 1239.1 619.53 25.69 0.000 3 2240.6 746.85 30.98 0.000 6 612.3 102.05 4.23 0.005 24 578.7 24.11 3546706 Grouping Information Using the Tukey Method and 95% Confidence Depth of Cut N Mean Grouping Feed 0.25 9 95.4444 A Rate Depth of Cut N Mean 0.20 9 94.7778 A Grouping 0.18 9 83.5556 0.010 0.20 3 103.667 A B 0.15 0.008 0.20 3 9 76.6667 98.667 AB 0.008 0.25 3 97.000 AB Feed Rate N 0.005 0.25 3 Mean Grouping 96.333 ABC 0.010 0.010 0.25 3 12 92.8333 A 93.000 A B C D 0.010 0.18 3 0.008 12 90.5833 A 89.333 A B C D 0.005 12 79.4167 0.008 0.18 3 88.000 B B C D 0.0100.15 3 85333 B C D E 0.005 0.20 3 82.000 C D E 0.008 0.15 3 78.667 DEF 0.005 0.18 3 73333 EF 0.005 0.15 3 65.000 F Question 8 (2 points) Saved Assuming that lower values of surface finish are better, to the following: 1. Make a recommendation for the best DEPTH OF CUT and FEED RATE to use in this machining operation. 2. Cite evidence from the Tukey comparisons and factor plots you indicated were appropriate to interpret. 3. List all other combinations of DEPTH OF CUT and FEED RATE that are not statistically different from the one you specified in the first part of this question. Format v BI U 1. EQ Question 9 (2 points) Saved Now assume that any SURFACE FINISH "better than 100.0 is acceptable AND that the company wants to use the greatest DEPTH OF CUT and FEED RATE possible (because it will result in the company making the parts faster). Do the following: 1. Explain why this new information could change your recommendation in the previous question. 2. Make a new recommendation for DEPTH OF CUT and FEED RATE and explain your rationale for the choice by citing information from the Tukey comparisons (state which comparison(s) you are interpreting)