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Lab Assignment 3 Criminology 320 Quantitative Research Methods in Criminology School of Criminology Simon Fraser University Spring 2024 Assignment Due: Feb. 27 (11:59pm) ********************This assignment is optional****************************** If you complete this assignment and submit it online by Feb. 27 (before midnight), the TAs will grade it and your grade will replace your lowest assignment grade in the course (for another assignment you SUBMITTED – you cannot use this to replace a non-submitted assignment, or an assignment you received a 0 for). ************************************************************************** Yockey Chapter for this lab assignment: 5 Total marks: 24 Obtain necessary data from Canvas  Download the files called “Offender age.sav” and “GSS-2014-victimization.sav” from the “Lab Assignments” folder Provide the SPSS output table(s) and/or figure(s) and a brief discussion for each exercise. Only provide the information requested. Your discussion should be based on the topic being covered. Reminder: The dataset for age has only one variable: Age, for the offender’s age when released from conviction for their latest offence (either released from jail/prison, or if they did not serve custodial time, it’s when they started probation or some form of community supervision). Consider this dataset a population of all offenders in the country of Helmustonia, for the year 2019. 1. For a research project, you have been given a contract by the government of Helmustonia. They are a new country and are still figuring out how to plan things. They need to budget their health care needs for their Corrections population. They know from Stats Canada that the average population of Canadian adults is 39.2 years old. You are to answer the question: Does that average apply to Helmustonia offenders as well? Use the dataset “Offender age” to answer this question. (12 marks) 1

Open “Offender age.sav” in SPSS and perform the appropriate analysis to answer the questions. a. State the null and alternative hypothesis (2 marks). b. Do Helmustonia offenders have an average age of 39.2? Test at α (p criterion) .05. Be sure to explain your answer. (5 marks) c. What is the effect size? How would you characterize it? (e.g., small, moderate, large…). (2 marks) d. Generate (and include in your assignment) a histogram for age , including a normal curve. Do these data look normal to you such that these tests can be undertaken using statistics such as the mean and standard deviation? (3 marks) 2. Last year, the European Union did a census and concluded that on average, people used 2.05 actions regularly to protect themselves from crime. Canada wants to see if their census data suggests that Canadians are different than EU citizens (12 marks) Open the GSS-2014-Victimization data in SPSS and perform the appropriate analyses to answer the questions below. a. State the null and alternative hypothesis. (2 marks) b. Do Canadians differ in number of protective actions taken compared to the EU census? Test at α = 0.05. Be sure to explain your answer. (5 marks) c. What is the effect size? How would you characterize it? (e.g., small, moderate, large…). (2 marks) d. Generate (and include in your assignment) a histogram for protect , including a normal curve. Do these data look normal to you such that these tests can be undertaken using statistics such as the mean and standard deviation? (3 marks) 2

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