Lecture 5:Chapter 3Statistics for Psychology

David Wallace Croft2005 May 27 Fri

Copyright 2005 David Wallace CroftThis work is licensed under the

Creative Commons Attribution License 2.0.

Quiz

• Please mute your mobile phones

• Write your name on a blank piece of paper

• Quiz will begin at 09:00

• When done, turn your paper over

• At 09:02, I will say, “Pens down”

• Writing after “Pens down” is cheating

• Pass your quizzes to your left

Outline

• Announcement

• Chapter 3 Slides

• Emphasis

• Homework

• Exam Review

• Next Class

• Questions

Announcement

• Dallas Area Neuroscience Group• Chapter of the Society for Neuroscience• www.SfNDANG.org

• Dr. Philip Boyer, UT Southwestern• “Neurodegenerative Diseases of the CNS:

Overview of Neuropathology & Research Approaches”

• 2005 May 27 Fri 16:00• GR 3.302

Chapter 3

Correlation

Aron and Aron, “Statistics for Psychology”, 3rd Ed., 2003.

Emphasis

• Francis Galton (1822-1911)• Eugenics (1865)• Inverted U• Cross-product vs. dot product• Average of cross-products of Z scores• Pearson product-moment correlation

coefficient• Range of r• p < 0.05

Homework

• Chapter 3• Set 1, Problems 1 and 2• Do the rest

• From raw data, you should know how to– Plot a scatter diagram– Compute the correlation coefficient

Exam Review

• 10 points total on the exam (10%)• 50 questions• 10/50 = 0.2 points/question (0.2%)

Next Class

• Monday no class

• Memorial Day

• Wednesday

• Read Chapter 4 before class

• Quiz at start of class

• Exam will cover Chapters 3, 4, and 5

Questions

• Questions for Class?

• Post to e-mail list unless personal– http://egroups.com/group/utd-statistics