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# Assignment 2 - Soci 332 American Military university Statistics for social science

Assignment Instructions
Download the attached file.
Submit the following files to the Drop Box no later than Sunday of Week 2:
Word file (this file) saved as [your last name]_SOCI332_Weekly Assignment 2.doc
SPSS output file (.spv) saved as [your last name]_SPSS-week2_output

The deadline for this assignment is 11:59 PM EST on Sunday of Week 2

Weekly ASSIGNMENT #2
Mental Math: [10 points]
Enter your answers in the spaces provided. Save the file using your last name as the beginning of the file name (e.g., Krieger_SOCI332_Weekly Assignment 2.doc) and submit via “Assignments.” When appropriate, show your work. You can do the work by hand, scan/take a digital picture, and attach that file with your work.

1. Which of the alternatives best describes the pattern of scores on the scatter diagram below?

A) No correlation
B) Curvilinear correlation
C) Positive linear correlation
D) Negative linear correlation

2. Which of the alternatives best describes the pattern of scores on the scatter diagram below?

A) No correlation
B) Curvilinear correlation
C) Positive linear correlation
D) Negative linear correlation

3. Which of the alternatives best describes the pattern of scores graphed below?

A) No correlation
B) Curvilinear correlation
C) Positive linear correlation
D) Negative linear correlation

4. Which of the alternatives best describes the pattern of scores graphed below?

A) Strong positive linear correlation
B) Weak negative linear correlation
C) Strong curvilinear correlation
D) Weak positive linear correlation
5. A researcher studying the relation of similarity to attraction reported the following results:
Person
Similarity
Attraction
Tested
X ZX
Y ZY
J.L.
1 1.17
3 1.18
K.M.
6 1.43
5 .39
L.B.
2 .65
6 0
R.C.
4 .39
10 1.57
M = 3.25 SD = 1.92 M = 6 SD = 2.55 r = .36
a. Give the Z score prediction formula for predicting attraction from similarity.

b. Predict the attraction to a person for whom the similarity is rated as a 5. Show your math.

c. Explain what you have done to a person who is familiar with correlation but not with regression.

SPSS ASSIGNMENT [10 points]

Creating Scatter Diagrams and More

Review and follow the steps in your text and you may want to keep SPSS Statistics 21 Brief Guide handy just in case.

1a. The following have been prepared so that data sets B through D are slightly modified versions of data set A. Make scatter diagrams and figure the correlation coefficients for each data set.

DATA SET A
DATA SET B
DATA SET C
DATA SET D
X
Y
X
Y
X
Y
X
Y
1
1
1
1
1
5
1
1
2
2
2
2
2
4
2
4
3
3
3
3
3
3
3
3
4
4
4
5
4
2
4
2
5
5
5
4
5
1
5
5

[Insert Scatter Diagrams here]

1b. Discuss how and why the correlations change.

Correlations

Review the steps in your text and you may want to keep SPSS Statistics 21 Brief Guide handy just in case.

2. Enter the following data into SPSS. Determine the correlation between hours of studying and grade point average in these honor students. Copy and paste your SPSS results into this document. Explain your results.

Hours of Studying
GPA
23
3.95
12
3.90
15
4.00
14
3.76
16
3.97
21
3.89
14
3.66
11
3.91
18
3.80
9
3.89

Submit the following files to the Drop Box no later than Sunday of Week 2:
⎫ Word file (this file) saved as Krieger_SOCI332_Weekly Assignment 2.doc
⎫ SPSS output file (.spv) saved as Krieger_SPSS-week2_output

The deadline for this assignment is 11:59 PM EST on Sunday of Week 2

Attached Files
SOCI332_Weekly+Assignment_2.doc Size: 203.5 KB  Downloads: 8

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