# Question about Regression analysis in SPSS

Unit 4

All work that can be done in SPSS must be submitted in that format.

1. Dr. Allen suspects a strong correlation between math anxiety and performance in statistics. To test that hypothesis he collects the following data.

Math Anxiety 1st Exam Score

78

68

82

56

23

22

34

20

53

65

30 42

58

38

75

82

85

49

86

54

53

84

a. Conduct and interpret the appropriate analysis to determine if there is a relationship between math anxiety and performance in statistics (10 pts)

b. Construct the appropriate graph to show the relationship between math anxiety and exam score (5 pts)

c. If a student scores a 49 on the Math Anxiety test, what would be the predicted score on the first exam? (2.5 pts.)

d. If a student scores an 85 on the Math Anxiety, what would be the predicted score on the first exam? (2.5 pts.)

2. A professor develops a scale that he believes measures spiritual maturity. To establish the reliability of his scale he administers the test to a group of students at 6 week intervals.

Test Retest

45

68

51

78

48

80

78

70 35

75

52

60

75

72

85

78

a. Is the test measuring a stable construct? Conduct and interpret the appropriate analysis to determine reliability of the test (15 pts.)

b. Construct the appropriate graph to illustrate the data (5 pts.)

3. A University Counseling Clinic is interested in predicting the levels of depression from the number of social events attended per week by a sample of their clients. The data are below:

Social events per week Depression Scores

0

2

2

1

3

1

2

0

3

3

4

1

1

2 15

3

12

11

5

8

15

13

2

4

2

8

10

8

a. Conduct and interpret the appropriate analysis to determine if there is a relationship between number of social events attended and depression scores (5 pts.)

b. Create the appropriate graph to illustrate the relationship between these two variables. (5 pts.)

b. What would you predict for a depression score for someone who attended 2 events per week? (2.5 pts)

c. What would you predict for a depression score if someone attended 4 events per week?( 2.5 pts.)

4. Students in General Psychology were allowed to sign up for one of two sections of that course. One section has a virtual lab component to it, in which they are given additional assignments to supplement the lecture content. These exercises consist of various games, demonstrations etc., that the students complete utilizing the CD-ROM that comes with their textbook. The other section of the course is a regular lecture class, with no supplemental lab exercises

No lab Virtual Lab

85

74

94

71

73

75

82

48

65

70

75

80 70

84

75

80

94

87

90

75

92

90

a. Conduct and interpret the appropriate analysis to determine if the virtual lab group has significantly higher scores (10 pts).

b. Construct the appropriate graph to illustrate the differences in the two groups (5 pts.)

c. From the professor's experience, he knows that students who score in the top 10% of the class are great candidates for lab assistants in the future. What score in the Virtual Lab group would indicate such a student (5 pts.)

5. The same students from the above scenario who are in the General Psychology class with the Virtual Lab exercises are asked to rate their opinion of the lab experiences.

Virtual Lab Opinion

70

84

75

80

94

87

90

75

92

90 15

18

12

17

20

18

15

17

16

10

a. Conduct and interpret the appropriate statistical analysis to determine if there is a relationship between their opinion of the lab and their final exam grade? (A high # reflects favorable opinion. (15 pts.)

b. Construct the appropriate graph to illustrate the relationship between the variables (5 pts.)

#### Solution Summary

The solution provides step by step method for the calculation of regression model in SPSS. Formula for the calculation and Interpretations of the results are also included.