Part I (10 points)
This part of the assignment requires students to use SPSS to calculate a correlation coefficient. Students will complete this part of the assignment in lab.
1a) Enter the data (note: n = 32) and use SPSS to compute the correlation coefficient and produce the scatterplot. Print the results.
Somewhere on your print-out, answer the following questions about this data set.
1b) State the null hypothesis and the alternative hypothesis.
1c) Look back at the print-out of your results and state your decision regarding the null hypothesis (retain Ho or reject Ho?). Justify your decision.
1d) What conclusion can you make about the relationship between the two variables?
|
Subject # |
High School GPA |
College GPA |
| 1 | 2.5 | 2.9 |
| 2 | 3.9 | 3.4 |
| 3 | 2.7 | 2.4 |
| 4 | 3.8 | 3.6 |
| 5 | 3.4 | 2.8 |
| 6 | 3.3 | 3.1 |
| 7 | 3.6 | 3.0 |
| 8 | 3.0 | 3.7 |
| 9 | 3.2 | 3.0 |
| 10 | 3.7 | 3.8 |
| 11 | 3.0 | 2.5 |
| 12 | 3.6 | 3.3 |
| 13 | 3.4 | 3.3 |
| 14 | 2.9 | 3.4 |
| 15 | 3.7 | 3.3 |
| 16 | 3.5 | 3.1 |
| 17 | 3.0 | 3.3 |
| 18 | 3.5 | 2.7 |
| 19 | 3.1 | 2.9 |
| 20 | 3.6 | 3.2 |
| 21 | 3.1 | 3.4 |
| 22 | 3.3 | 3.0 |
| 23 | 3.6 | 3.7 |
| 24 | 3.3 | 2.7 |
| 25 | 3.4 | 3.6 |
| 26 | 3.8 | 3.1 |
| 27 | 2.8 | 3.1 |
| 28 | 3.3 | 3.8 |
| 29 | 3.4 | 3.7 |
| 30 | 2.9 | 2.8 |
| 31 | 3.2 | 3.2 |
| 32 | 3.5 | 3.4 |
Part II (10 points)
This portion of the assignment
requires students to complete selected problems by hand. Please use a separate sheet of paper and write legibly.
Gravetter & Wallnau text (7th ed.), chapter 16:
p. 544, # 12 *
p. 545, # 18
p. 546, # 22 *
*For Q12 & Q22, be sure to include the following:
A) State the null hypothesis and
the alternative hypothesis
B) Perform the correlation calculations by hand. Be sure to include degrees of freedom and the critical value.
C) State your decision about the null hypothesis. (Reject or Retain the null hypothesis?)
D) What conclusion can you
make about the relationship between the two variables?