# [Get Answer ]-Need Help With This One 3

### Question Description

Part 1:

1. Green & Salkind:Lesson 42, Exercises 1, 3–4

The following helpful tips are numbered to correspond withthe exercise number to which they refer (a dash indicates that no tips areneeded):

1. This research scenario will be familiar to you. Doletters a, b, and c, answering the questions beneath your SPSS output. (3 ptsfor output and 2 pts each for a–c)

3. All homework “Results sections” must follow the examplegiven in the Course Content document “Writing Results of Statistical Tests in CurrentAPA Format” (Note: you do not have to refer to a figure). (4 pts)

4. Create a boxplotas done in earlier modules/weeks. (3 pts)

2. SpearmanRho Exercise: This exercise is not found in Green and Salkind. Open the datafile “Mod8_SpearmanRho_Exercise File” in the Module 8 SPSS Assignments folderin Blackboard, read the following information, and answer the questions below.

Scenario: During the Vietnam War, a “draft” was putin place that selected young men born on certain dates and placed them in thearmed services. The process proceeded via lottery: Dates like “Sept. 14” wereplaced in capsules, one for each of the 365 days of the year, and the capsuleswere then drawn randomly from a container. In the 1970 draft, Sept. 14 was thefirst date drawn, meaning that all young men born on Sept. 14 were eligible forthe very first round of the draft, and so on. After the results of the 1970 draftwere analyzed, many statisticians and politicians asserted that the process hadnot been random at all, and certain men had a higher chance of being draftedthan others. This case is famous, making it to the pages of internationalnewspapers and the U.S. Supreme Court.

In the SPSS data file in Blackboard, you will find theoriginal 1970 draft data with two variables. Column 1 contains the consecutiveday of the year (1 = Jan. 1; 2 = Jan. 2; and so on). Column 2 contains thedraft rank (1 =  first date drawn; 2=  second date drawn; and so on). So, inthe first row of the data set, Day 1 (Jan. 1) had a draft rank of 305. Thelower the draft rank, the sooner and more likely a man was to be drafted. So ahigher rank (like 305, for example) was preferable to those who did not want tobe drafted right away.

If the process had been statistically random, there would beno correlation between the day of the year you were born and the rank that wasassigned to you (r = 0). Any type of significant correlation would mean thatthere was something relating the variables beyond mere random error, or chance.

1. Open the data file and perform a Spearman correlationanalysis for the day of year and the draft rank. Paste your output in thehomework document. (2 pts)

2. Write an APA-style Results section describing theoutcome. (2 pts)

3. Answer the next two questions in “layman’s terms” as iffor someone who doesn’t know much about statistics: (a) Why did people accusethe process of not being random? (b) What do the data indicate for men bornearlier in the year vs. men born later in the year?  (2 pts)

It’s not required, but if you want to check out the originalNew York Times article and see an interesting graph, go to this link: http://frewm.wikispaces.com/file/view/nytimes.pdf

(Data file source: http://www.amstat.org/publications/jse/v5n2/datasets.starr.html#rosenbaum1)

Part 2:

1.  Auniversity assessment department collects data to determine whether classranking differs between male and female students. Based on the top 12 males andtop 12 females of the senior class, is there a difference between genders on wherethey are ranked in their class? Perform a Mann-Whitney U test, being sure tofollow the directions on the following page. (3 pts)

Male

Female

2

5

7

10

11

13

15

16

18

21

23

24

1

3

4

6

8

9

12

14

17

19

20

22

Note: Your file mustbe set up in the same manner as the example data file and the exercise filefrom Part 1, with a grouping variable and a dependent/test variable. Becausethese are class rankings, they are ordinal data and must be identified as suchin “Variable View” under the column “Measure.” Click in the cell under“Measure” in the row for your class rank variable, and choose “Ordinal.” Thisensures that SPSS treats the data at the proper level of measurement.

2. Create aboxplot depicting the results. (3 pts)

3. Write an APA-style Results sectiondescribing the outcome. All homework “Results sections” must follow the examplegiven in the Course Content document “Writing Results of Statistical Tests in CurrentAPA Format” (Note: you do not have to refer to a figure). (3 pts)

Part 3: CumulativeHomework

1. Anorganizational psychologist wants to find out if job satisfaction ratingsdiffer as a function of department (human resources, sales, and research anddevelopment) and/or time of shift (early, late). Choose the correct test toanalyze this question, set up the SPSS file, and run the analysis. Follow thedirections under the table below.

Early shift

Human Resources

Sales

Research and Development

10

16

12

16

9

19

21

16

18

17

21

18

14

Late shift

14

13

8

12

12

17

12

14

9

10

12

15

19

14

a) Paste appropriate SPSS output. (3 pts)

b) Paste appropriate SPSS graph. (3 pts)

c) Write an APA-style Results section describing theoutcome. All homework “Results sections” must follow the example given in theCourse Content document “Writing Results of Statistical Tests in Current APAFormat” (Note: you do not have to refer to a figure). (3 pts)

Submit this assignment by 11:59 p.m. (ET) on Friday of Module/Week 8.