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# Assignment 3 - Soci 332 American Military university Statistics for social science

Assignment Instructions
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 3.doc
SPSS output file (.spv) saved as Krieger_SPSS-week3_output

The deadline for this assignment is 11:59 PM EST on Sunday of Week 3

Weekly ASSIGNMENT #3

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 3.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. For the following research questions, create one null hypothesis (N), one directional research hypothesis (D), and one nondirectional research hypothesis (ND). Clearly indicate each of them.

a. What are the effects of attention on out-of-seat classroom behavior?

N:

D:

ND:

b. What is the relationship between the quality of a marriage and the quality of the spouses’ relationships with their siblings?

N:

D:

ND:

c. What’s the best way to treat an eating disorder?

N:

D:

ND:

2. For the following set of scores fill in the empty cells. The mean is 70 and the standard deviation is 8.

Raw Score
Z Score

68.0

_____________

_____________

-1.6

82.0

_____________

_____________

1.8

69.0

_____________

_____________

-0.5

85.0

_____________

_____________

1.7

72.0

_____________

Computing z-Scores Using SPSS

Follow the instructions below. For salary be sure to use “scale” for measure (and you will be entering the actual number so no need for values); sex is a nominal variable (Male= 1, Female=2).

In SPSS, we compute z-scores via the Descriptives command.

After you enter the data above, click Analyze, then Descriptive Statistics, then Descriptives – this will take you to the dialog box for descriptives.

In the bottom-left corner you will see a check box labeled “Save standardized values as variables”, check this box and move the variable SALARY into the right-hand blank. Then click OK to complete the analysis. You will see the standard output from the Descriptives command. Notice that the z-scores are not listed. SPSS inserts them into the data window as a new variable (ZSALARY).

Copy and paste your results from SPSS into this document.

1. The following data are from a survey of high school teachers. Using the data below, determine the z-score that corresponds to each teacher’s salary and enter them in the table below.

SALARY

SEX

ZSALARY

35,000

Male

18,000

Female

20,000

Male

50,000

Female

38,000

Male

20,000

Female

75,000

Male

40,000

Female

30,000

Male

22,000

Female

23,000

Male

45,000

Female

2. Write a brief (but thorough) analysis of what these z-scores say about each teacher’s salary.

Submit the following files to the Drop Box no later than Sunday of Week 3:
• Word file (this file) saved as Krieger_SOCI332_Weekly Assignment 3.doc
• SPSS output file (.spv) saved as Krieger_SPSS-week3_output

The deadline for this assignment is 11:59 PM EST on Sunday of Week 3

Attached Files