Multiple Regression

Problem 1) Multiple Regression. Using Minitab and interpreting results. (24 points)
Refer to the data in Exercise 12-9. Data set is posted on Bb.
1) Use Minitab to build a multiple regression model for on y=patient satisfaction vs. x1=age, x2=severity, and x3=anxiety.
Copy and paste (or use snipping tool) the results to a word document/pdf. (4 points)
2) Circle the p-values on the ANOVA and explain briefly what they mean in terms of the model. (4 points)
3) Circle the adjusted R2 value and explain briefly what it means. (4 points)
4) Circle the regression equation. What is the predicted satisfaction for an age=59, severity=55, and anxiety=5.0. (4 points)
5) Copy the four-in-one residual plots to the same word document/pdf. Briefly state what we are looking for, what we see,
and what it means for each of the four plots. (8 points)
Problem 2) ANOVA. Exercise 13-1 (page 554) Fill in the missing pieces on this ANOVA table. Copy and paste the table to the word
document/pdf. (4 points)
Source SS DF MS F
Factor 117.4 39.1
Error 396.8 16
Total 514.2 19
Problem 3) ANOVA, Exercise 13-2 (page 554) Consider the following computer output for an experiment. The factor was tested
over four levels. Fill in the missing pieces on this ANOVA table. Copy and paste the table to the word document/pdf. (7 points)
Source SS DF MS F
Factor 330.4716 4.42
Error
Total 31
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