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Liberty PSYC 355 SPSS HOMEWORK 8 - Nonparametric Tests




Question;SPSS Homework 8 Instructions;Nonparametric;Tests;Part 1;1. Green & Salkind: Lesson 42, Exercises;1, 3?4;The following helpful tips are;numbered to correspond with the exercise number to which they refer (a dash;indicates that no tips are needed);1.;This research scenario will be familiar to you. Do;letters a, b, and c, answering the questions beneath your SPSS output. (3 pts;for output and 2 pts each for a?c);3.;All homework ?Results sections? must follow the example;given in the Course Content document ?Writing Results of Statistical Tests in Current;APA Format? (Note: you do not have to refer to a figure). (4 pts);4.;Create a boxplot;as done in earlier modules/weeks. (3 pts);2.;Spearman Rho;Exercise: This exercise is not found in Green & Salkind. Open the data file;?Mod8_SpearmanRho_Exercise File? in the Module/Week 8 SPSS Assignments folder;in Blackboard and read the following information, answer the questions below.;Scenario: During the Vietnam;War, a draft was put in place that selected young men born on certain dates and;placed them in the armed services. The process proceeded via lottery: Dates;like ?Sept. 14? were placed in capsules, one for each of the 365 days of the;year, and the capsules were then drawn randomly from a container. In the 1970;draft, Sept. 14 was the first date drawn, meaning that all young men born on;Sept. 14 were eligible for the very first round of the draft, and so on. After;the results of the 1970 draft were analyzed, many statisticians and politicians;asserted that the process had not been random at all, and certain men had a;higher chance of being drafted than others. This case is famous, making it to;the pages of international newspapers and the U.S. Supreme Court.;In the SPSS data file in Blackboard;you will find the original 1970 draft data with two variables. Column 1;contains the consecutive day of the year (1 = Jan. 1, 2 = Jan. 2, and so on).;Column 2 contains the draft rank (1 =;first date drawn, 2 = second date;drawn, and so on). So, in the first row of the data set, Day 1 (Jan. 1) had a;draft rank of 305. The lower the draft rank, the sooner and more likely a man;was to be drafted. So, a higher rank (like 305, for example) was preferable to;those who did not want to be drafted right away.;If the process had been;statistically random, there would be no correlation between the day of the year;you were born and the rank that was assigned to you (r = 0). Any type of;significant correlation would mean that there was something relating the variables;beyond mere random error, or chance.;1.;Open the data file and perform a Spearman correlation;analysis for the day of year and the draft rank. Paste your output in the;homework document. (2 pts);2.;Write a current APA-style results section describing;the outcome. (2 pts);3.;Answer the next two questions in ?layman?s terms? as if;for someone who does not know much about statistics: (a) Why did people accuse;the process of not being random? (b) What do the data indicate for men born;earlier in the year vs. men born later in the year? (2 pts);It?s not required, but if you want to check out the original;New York Times article and see an interesting graph, go to this link:;(Data file source:;Part 2;1. A;university assessment department collects data to determine whether class;ranking differs between male and female students. Based on the top 12 males and;top 12 females of the senior class, is there a difference between genders on;where they are ranked in their class? Perform a Mann-Whitney U test, being sure;to follow 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 must;be set up in the same manner as the example data file and the exercise file;from Part 1 with a grouping variable and a dependent/test variable. Because;these are class rankings, they are ordinal data and must be identified as such;in ?Variable View? under the column ?Measure.? Click in the cell under;?Measure? in the row for your class rank variable and choose ?Ordinal.? This;ensures that SPSS treats the data at the proper level of measurement.;2.;Create a boxplot depicting the results. (3 pts);3.;Write a current APA-style results section describing;the outcome. All homework ?results sections? must follow the example given in;the Course Content document ?Writing Results of Statistical Tests in Current APA;Format? (Note: you do not have to refer to a figure). (3 pts);Part 3: Cumulative;Homework;1.;An organizational psychologist wants to find out if job;satisfaction ratings differ as a function of department (human resources;sales, and research and development) and/or time of shift (early, late). Choose;the correct test to analyze this question, set up the SPSS file, and run the;analysis. Follow the directions 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 a current APA-style results section describing;the outcome. All homework ?results sections? must follow the example given in;the Course Content document ?Writing Results of Statistical Tests in Current APA;Format? (Note: you do not have to refer to a figure). (3 pts)


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