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#### SPSS: Chi Square Tests Assignment Instructions Overview This assignment is designed to increase your statistical literacy and proficiency in conducting and interpreting the chi square test of goodness of fit and the chi square test of independence

###### Statistics

SPSS: Chi Square Tests Assignment Instructions

Overview

This assignment is designed to increase your statistical literacy and proficiency in conducting and interpreting the chi square test of goodness of fit and the chi square test of independence. You will be completing two chi square tests for goodness of fit in SPSS, using data that are related to specific research scenarios in the behavioral sciences, such as psychology, social work, and counseling. You will also be completing one Cumulative Knowledge Question that will use an analysis learned in a previous week. Behind the scenes knowledge of how this test is conducted is fundamental to being able to understand and apply research in your related field to your practice. Additionally, SPSS skills are professionally valuable, as it is one of the most commonly used statistical software packages in behavioral science settings, both academic and professional.

Instructions

• This assignment includes two problem sets that contain research scenarios and related questions.
• For each scenario, you will run an analysis in SPSS. The required product will include the SPSS output, an APA-style Results section describing the results, and the appropriate graph inserted as a Figure in APA style.
• For all problems, interpret results based on an alpha level of a = .05.
• This assignment is worth 90 points.

Please review the SPSS Homework Tutorial in this module for directions on how to run the statistical test, as well as the Results Sections in APA Style presentation, which includes a template for completing an APA-style Results section for the chi square test for goodness of fit. The scenarios begin on the next page.

 Problem Set 1: Chi Square Test of Goodness of Fit Research Scenario: A substance abuse counselor is interested in the effects of dental prescriptions of opioids to teenagers. He particularly wants to look at whether there is a difference in opioid dependence based on whether or not young adults had opioids prescribed after a wisdom teeth extraction during their teenage years. He gathers data from local treatment centers, focusing on young adults (age 18-25) with diagnosed opioid dependency. He creates the table below based on the frequency of opioid-dependent young adults who answered that they either: received (and took) an opioid prescription from a dentist for wisdom teeth removal; did not receive an opioid prescription from a dentist for wisdom teeth removal; or did not have wisdom teeth removed at any time.   Using this table, enter the data into a new SPSS data file and run a Chi Square Test of Goodness of Fit to test whether the proportions of opioid dependency are equal across categories. Remember to weight cases as shown in the presentation. Create a simple bar chart to show the relationship between the variables. Follow the directions below the table to complete the homework.

 Opioid Prescribed by Dentist and Taken 57 Opioid not Prescribed by Dentist 23 Did Not Have Wisdom Teeth Removed 17

1. Paste SPSS output.  (10 pts)

1. Write an APA-style Results section based on your analysis. Include your bar chart as an APA-style Figure as demonstrated in the APA writing presentation. (Results = 12 pts; Figure = 8 pts)

 Problem Set 2: Chi Square Test for Independence Research Scenario: A forensic psychologist is running a jury study to examine factors that influence jury decisions. He hires actors to conduct a mock trial with the characteristics of actual criminal trials, with the exception that the “jury” is larger than 12 people in order to have a larger sample. At the end of the mock trial, he polls the jury participants and asks them what their decision would be regarding the defendant: vote to convict, vote to acquit, or undecided. He records the frequencies of answers in the table below. Using this table, enter the data into a new SPSS data file and run a Chi Square Test of Goodness of Fit to test whether the proportions are equal across categories. Remember to weight cases as shown in the presentation. Create a simple bar chart to show the relationship between the variables. Follow the directions below the table to complete the homework.

 Vote to convict 12 Vote to acquit 16 Undecided 7

1. Paste SPSS output.  (10 pts)

1. Write an APA-style Results section based on your analysis. Include your bar chart as an APA-style Figure, with figure number and title, as demonstrated in the Results Section presentation. (Results = 12 pts; Figure = 8 pts)

 Problem Set 3: Cumulative Knowledge Question Research Scenario: An admissions counselor wants to find out if TOEFL® scores are predictive of college GPA for international students at a local university. The TOEFL is the Test of English as a Foreign Language, which the school requires for admission, and students can score from 0-120, with 120 being a perfect score. The data from the latest freshmen class are in the table below. Can TOEFL scores be used as a predictor of college GPA?   Using this table, enter the data into a new SPSS data file. Choose the correct analysis (it will be one learned in a previous module) to determine whether TOEFL scores predict college GPA for international students. Follow the directions below the table to complete this part.

 TOEFL® Score College GPA 94 80 112 72 93 101 76 90 83 68 113 74 3.4 2.7 3.5 3.1 3.2 3.6 2.8 2.9 3.1 2.4 3.6 2.7

1. Write an APA-style Results section based on your analysis. Include the appropriate graph as an APA-style Figure, with figure number and title, as demonstrated in the Results Section presentation. (Results = 12 pts; Figure = 8 pts)

Submit this assignment by 11:59 p.m. (ET) on Monday at the end of Module/Week 7.