# ps7 - 0.0996 0.0991 0.1038 1 1 0.0650 0.0650 0.0667 0.0662...

This preview shows pages 1–2. Sign up to view the full content.

MIT OpenCourseWare http://ocw.mit.edu 2.830J / 6.780J / ESD.63J Control of Manufacturing Processes (SMA 6303) Spring 2008 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms .

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Massachusetts Institute of Technology Department of Mechanical Engineering Department of Electrical Engineering and Computer Science 2.830J/6.780J Control of Manufacturing Processes Spring 2008 Assignment 7 Out 4/4/2008; due Thursday 4/10/2008 Problem 1 Montgomery 12–10 Problem 2 Montgomery 12–15 Problem 3 Suppose that the following results were obtained from a 2-factor experiment with center point. Five replicate measurements were made for each input combination: x 1 x 2 y (5 replicates) 0 0 0.1014 0.1056
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 0.0996 0.0991 0.1038 1 1 0.0650 0.0650 0.0667 0.0662 0.0664 1 –1 0.0914 0.0891 0.0925 0.0855 0.0913 –1 1 0.1107 0.1071 0.1109 0.1115 0.1145 –1 –1 0.1963 0.2185 0.1914 0.1814 0.2092 (a) Attempt to fit a model to these results. Examine the residuals using a normal probability plot and a plot of residuals against fitted values. Do the residuals appear to have equal variance across the prediction range? (b) Now try fitting models, in turn, to the transformed data sets exp( y ) and 1/ y . In each case examine the residuals and draw conclusions about which, if either, transformation is appropriate. (These data are also provided in an Excel file on the course website , `7-3.xls' .) Problem 4 Montgomery 13–12...
View Full Document

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern