Assignment 3 – SPSS Assignment

Due: Mar. 29 (A2 & B2) & Mar. 31 (C2)

For this assignment you will be required to conduct a series of analyses related to regression. You will use the data file regression.sav. It is posted on ACME.

Part A

1) Generate a correlation matrix for all of the variables in the data file. Therefore, the matrix should include zhelp, severity, sympathy, anger, efficacy and empatend.

Part B

2) Conduct a simple regression between zhelp and sympathy. Write out (by hand) the corresponding regression equation and report the proportion of variance explained.

3) If you had a score of 4 on sympathy, what would be the predicted zhelp score? Show your calculations.

4) Use a scatterplot to present zhelp and sympathy.

5) Conduct a simple regression between zhelp and empatend. Write out (by hand) the corresponding regression equation and report the proportion of variance explained.

6) If you had a score of 10 on empatend, what would be the predicted zhelp score? Show your calculations.

7) Conduct a simple regression between zhelp and efficacy. Write out (by hand) the corresponding regression equation and report the proportion of variance explained.

8) If you had a score of 6 on efficacy, what would be the predicted zhelp score? Show your calculations.

Part C

9) Conduct a multiple regression including all 5 of the variables using the Enter method. Report the proportion of variance explained.

10) Conduct a multiple regression for the variables using the Stepwise method. Report the proportion of variance explained for each step in the regression.