Tutor-marked Exercise 3: Computer Section

Running head: TUTOR-MARKED EXERCISE 3: COMPUTER SECTION
Tutor-marked Exercise 3: Computer Section
Name of the Student:
Name of the University:
Author Note:

1
TUTOR-MARKED EXERCISE 3: COMPUTER SECTION
Table of Contents
Answer 1....................................................................................................................................3
Answer 1. A. Scatter plot.......................................................................................................3
Answer 1. B. Correlation table...............................................................................................3
Answer 1. C. Relation at α=0.01............................................................................................4
Answer 1. D. Simple linear regression...................................................................................4
Answer 1. E. Histogram and Normal probability plot...........................................................4
Answer 1. F. Fitness of linear regression...............................................................................6
Answer 1. G. Regression equation.........................................................................................6
Answer 1. H. Prediction of price where size=1200 sq. ft......................................................6
Answer 1. I. Prediction of price where size=4000 sq. ft........................................................7
Answer 1. J. Prediction of the price of Vancouver house......................................................7
Answer 1. K. Coefficient of Determination...........................................................................7
Answer 1. L. Estimate of σε...................................................................................................8
Answer 1. M. H0: β0=0 at α=0.05...........................................................................................8
Answer 1. N. P-value for the test...........................................................................................8
Answer 1. O. H0: β1=0 at α=0.05............................................................................................8
Answer 1. P. P-value for the test............................................................................................9
Answer 1. Q. AOV of the regression output..........................................................................9
Reference..................................................................................................................................10
Appendices...............................................................................................................................11
Appendix 1...........................................................................................................................11

2
TUTOR-MARKED EXERCISE 3: COMPUTER SECTION
Appendix 2...........................................................................................................................12
Appendix 3...........................................................................................................................13
Appendix 4...........................................................................................................................18

3
TUTOR-MARKED EXERCISE 3: COMPUTER SECTION
Answer 1
Answer 1. A. Scatter plot
The scatter plot shows a negative relation between size of the and the price of the
house.

4
TUTOR-MARKED EXERCISE 3: COMPUTER SECTION
Answer 1. B. Correlation table
The correlation is s=negative and strong enough between the two variables. The
correlation coefficient is significant at 1% significance level.
Answer 1. C. Relation at α=0.01
The coefficient of the size is negative and the p-value is less than 0.01. This indicates
that there exist a significant negative relation between size and the price of the house.

5
TUTOR-MARKED EXERCISE 3: COMPUTER SECTION
Answer 1. D. Simple linear regression
Answer 1. E. Histogram and Normal probability plot