ioe366f09-FinalExam-Solution

ioe366f09-FinalExam-Solution - IOE 366 F2009 Final Exam...

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IOE 366 F2009 Final Exam Solution Part 1 (20 Points Total). True or False and Fill-in-the-Blank Questions(5 Questions, 2 Point Each, 10 Points Total) 1. The least squares regression line is obtained when the sum of the squared residuals is minimized. True False Answer: True 2. The simple linear regression model is is a random variable assumed to be __________ distributed, with ANSWER: normally, 0, 3. To select a quarter-fraction of a factorial experiment possible treatment conditions), the number of generators that must be selected is __________. ANSWER: two 4. The t critical value for a confidence level of 90% for the slope of the regression line, based on a sample of size 20, is t = __________. ANSWER: 1.734 5. Many statisticians recommend ______ ____ for an assessment of model validity and assumptions. These include plotting the residuals or standardized residuals on the vertical axis versus the fitted values or the observation order on the horizontal axis. ANSWER: residual plots 1 of 11
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IOE 366 F2009 Final Exam Solution Multiple Choice (5 Questions, 2 Points Each, 10 Points Total) Please select the best answer.
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