Case Study 2
Modeling the
Sale Prices of
Residential
Properties in
Four
Neighborhoods
Copyright © 2012 Pearson Education, Inc. All rights reserved.
Figure CS2.1 The theoretical relationship
between mean sale price and appraised
value x
Copyright © 2012 Pearson Education, Inc.
4- 2
Figure CS2.2 MINITAB scatterplot
of sales-appraisal data
Copyright © 2012 Pearson Education, Inc.
4- 3
Copyright © 2012 Pearson Education, Inc.
4- 4
Figure CS2.3 SAS regression
output for Model 1
Copyright © 2012 Pearson Education, Inc.
4- 5
Figure CS2.4 SAS regression
output for Model 2
Copyright © 2012 Pearson Education, Inc.
4- 6
Figure CS2.5 SAS regression
output for Model 3
Copyright © 2012 Pearson Education, Inc.
4- 7
Figure CS2.6 SAS regression
output for Model 4
Copyright © 2012 Pearson Education, Inc.
4- 8
Figure CS2.7 Portion of SAS
regression output for Model 5
Copyright © 2012 Pearson Education, Inc.
4- 9
Copyright © 2012 Pearson Education, Inc.
4- 10
Copyright © 2012 Pearson Education, Inc.
4- 11
Figure CS2.8 SAS graph of predictable
sales for land value of $150,000
Copyright © 2012 Pearson Education, Inc.
4- 12
Figure CS2.9 SAS descriptive
statistics, by neighborhood
Copyright © 2012 Pearson Education, Inc.
4- 13
Figure CS2.10 SAS printout showing
95% prediction intervals for sale price
Copyright © 2012 Pearson Education, Inc.
4- 14