Transcript
Page 1: Reasoning in Psychology Using Statistics Psychology 138 Spring 2015

Reasoning in PsychologyUsing Statistics

Psychology 138

Spring 2015

Page 2: Reasoning in Psychology Using Statistics Psychology 138 Spring 2015

Reasoning in Psychology Using

Statistics

Announcements

• Outline– Course format

• Lecture classes

• Labs: Calculations and SPSS

– Brief syllabus review

– 30 min intro video

Page 3: Reasoning in Psychology Using Statistics Psychology 138 Spring 2015

Reasoning in Psychology Using

Statistics

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 decisions– Descriptive statistics

– Inferential statistics

• Data: numbers with a context– How were numbers measured, what do they mean?

– Understanding the context

Page 4: Reasoning in Psychology Using Statistics Psychology 138 Spring 2015

Reasoning in Psychology Using

Statistics

Syllabus

• Where is it?: ReggieNet (via MyIllinoisState)• Direct link to syllabus:

• http://psychology.illinoisstate.edu/jccutti/psych138/sp15/138syllabus.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. • I don’t round up, so 899 is a B

• Exams: In-lecture & in labs, quizzes, final project, labs

Page 5: Reasoning in Psychology Using Statistics Psychology 138 Spring 2015

Reasoning in Psychology Using

Statistics

Reading Packet (download the pdf)

• Instead of an expensive textbook

• Read it before coming to lecture and going to labs

• Practice questions (solutions are in the back)

Page 6: Reasoning in Psychology Using Statistics Psychology 138 Spring 2015

Reasoning in Psychology Using

Statistics

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

Week 10

Weeks 10-15

• Inferential statistics: hypothesis testing – rats, robots, and roller skates

• Wiley (1977)

Page 7: Reasoning in Psychology Using Statistics Psychology 138 Spring 2015

Reasoning in Psychology Using

Statistics

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


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