PSYC354_HW7G.docx

# PSYC354_HW7G.docx - Modified Feb 2016 PSYC 354 HOMEWORK 7...

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Modified Feb. 2016 PSYC 354 H OMEWORK 7 Confidence Intervals, Effect Size, and Statistical Power When submitting this file, be sure the filename includes your full name, course and section. Example: HW7_JohnDoe_354B01 Be sure you have reviewed this module/week’s lesson and presentations along with the practice data analysis before proceeding to the homework exercises. Complete all analyses in SPSS, then copy and paste your output and graphs into your homework document file. Answer any written questions (such as the text-based questions or the APA Participants section) in the appropriate place within the same file. Part I: Concepts Questions 1–8; Answer the questions in the spaces provided. Part I: Questions 1a-1e Fill in the highlighted blanks with the best word or words. 1-a) _Effect size_ __ indicates the size of a difference between two populations and is unaffected by sample size. 1-b) Cohen's d measures the difference between means in terms of _Standard Deviaton __ . 1-c) According to Cohen's conventions, a d value of _0.2_ __ indicates a small effect. 1-d) A study that calculates the mean effect size from the individual effect sizes of many Page 1 of 8

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Modified Feb. 2016 studies is called a(n) _Meta-Analysis_ __ . 1-e) Statistical power refers to the probability of successfully rejecting the _Null _ hypothesis. Part I: Questions 2-5 Complete the following problems. If applicable, remember to show work in your homework document to receive partial credit.
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