Reasoning in Psychology Using Statistics Spring 2019

Announcements Outline Course format Brief syllabus review Lecture classes: Conceptual foundations Labs: Calculations and SPSS Brief syllabus review 30 min intro video Announcements

What are Statistics? “It’s about almost everything in modern society.” Bennett, Briggs, Triola (2003), Statistical Reasoning for Everyday life Statistics: tools, used to make data based decisions Descriptive statistics Inferential statistics Data: numbers with a context How were numbers measured, what do they mean? Examples of stocks, sports, weather What are Statistics? Arthur Benjamin: Teach statistics before calculus Peter Donnelly: How juries are fooled by statistics Why do I have to take stats

What are Statistics? “It’s about almost everything in modern society.” Bennett, Briggs, Triola (2003), Statistical Reasoning for Everyday life Data science vs. Statistician Statistics: tools, used to make data based decisions Descriptive statistics Inferential statistics Data: numbers with a context How were numbers measured, what do they mean? “Overall employment of mathematicians and statisticians is projected to grow 33 percent from 2016 to 2026, much faster than the average for all occupations. Businesses will need these workers to analyze the increasing volume of digital and electronic data.” Bureau of Labor Statistics Examples of stocks, sports, weather What are Statistics?

Where is it?: ReggieNet (via ) Syllabus Where is it?: ReggieNet (via ) Direct link to syllabus: http://psychology.illinoisstate.edu/jccutti/psych138/sp19/138syllabus.html Includes contact information for me and your lab instructors Course Calendar and Outline Powerpoint lectures, links to labs, due dates, etc. Evaluation: 1000 points total, 900-1000 for A, etc. I don’t round up, so 899 is a B Exams: In-lecture & in labs, quizzes, final project, labs

McBride (2018). The Process of Statistical Analysis in Psychology, Sage Read it before coming to lecture and going to labs “Stop and Think Practice questions (solutions are in the back) Text book

Stats tutorial Reading Packet (download the pdf) If you want a little more help, there is a Statistics Tutorial pdf linked to the ReggieNet page (from a past semester). Each section also has practice problems. Stats tutorial Reading Packet (download the pdf)

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

Questions? Today’s lab Getting to know Your GAs and the Lab set up ReggieNet site Practice a quiz Uploading a file Submitting and assignment Questions?