Reasoning in Psychology Using Statistics Psychology 138 Spring

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Reasoning in Psychology Using Statistics Psychology 138 Spring 2017

Reasoning in Psychology Using Statistics Psychology 138 Spring 2017

 • Outline – Course format • Lecture classes • Labs: Calculations and SPSS

• Outline – Course format • Lecture classes • Labs: Calculations and SPSS – Brief syllabus review – 30 min intro video Announcements Reasoning in Psychology Using Statistics

“It’s about almost everything in modern society. ” Bennett, Briggs, Triola (2003), Statistical Reasoning

“It’s about almost everything in modern society. ” Bennett, Briggs, Triola (2003), Statistical Reasoning for Everyday life • Statistics: tools, used to make decisions – Descriptive statistics – Inferential statistics • Data: numbers with a context – How were numbers measured, what do they mean? What are Statistics? Reasoning in Psychology Using Statistics Arthur Benjamin: Teach statistics before calculus Peter Donnelly: How juries are fooled by statistics

Syllabus • Where is it? : Reggie. Net (via • ) Direct link to

Syllabus • Where is it? : Reggie. Net (via • ) Direct link to syllabus: • http: //psychology. illinoisstate. edu/jccutti/psych 138/sp 17/138 syllabus. html • Contact information: for me and your GAs • Course Calendar and Outline • Powerpoint lectures, links to labs, due dates, etc. • Evaluation: • 1000 points total, 900 -1000 for A, etc. • • Reasoning in Psychology Using Statistics I don’t round up, so 899 is a B Exams: In-lecture & in labs, quizzes, final project, labs

 • Instead of an expensive textbook • Read it before coming to lecture

• Instead of an expensive textbook • Read it before coming to lecture and going to labs • Practice questions (solutions are in the back) Reading Packet (download the pdf) Reasoning in Psychology Using Statistics

 • Main points from the video – Every statistical test starts with an

• Main points from the video – Every statistical test starts with an appropriate selection of subjects – Inferences must be based on more Weeks 5&6 than one observation because of variability – Two types of error must be Week 10 controlled while testing hypotheses Weeks 10 -15 – A decision is based on two things: Week 3 • • Inferential statistics: hypothesis testing – rats, robots, and roller skates Wiley (1977) • The difference between groups • The variability of the scores Video review Reasoning in Psychology Using Statistics The Credibility Gap • • • Michael Mc. Kean David Lander Harry Shearer

 • Today’s lab – – – Getting to know Your GAs and the

• Today’s lab – – – Getting to know Your GAs and the Lab set up Reggie. Net site Practice a quiz Uploading a file Submitting and assignment Questions? Reasoning in Psychology Using Statistics