13regression.stud2008

# 13regression.stud200 - Psyc 305 Week 7 Regression At the end of these two classes you should Understand the relationships between z scores

This preview shows pages 1–7. Sign up to view the full content.

Psyc 305 Week 7 Regression

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
At the end of these two classes you should: Understand the relationships between z scores, correlation, and regression. Understand how regression allows us to make predictions. Understand how we select a regression line. Be able to compute a regression equation from raw scores or z-scores. Understand the principle of “regression to the mean”. Understand and compute the error in the predictions. Understand what multiple correlation is and when it should be used.
Descriptive Statistics (simplify, summarize, and organize data) 1. frequency distributions 2. graphical representations of data 3. summary statistics a. measures of central tendency b. measures of variability c. measures of relationship (2 + variables)

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Where we’ve been and where we are going. .. X -- one variable Y -- one variable Mean SD Mean SD
A stroll down memory lane. .. 0 1 2 3 4 5 6 Y 0 1 2 3 4 5 6 7 8 9 10 X You are in 8th/9th grade algebra and your teacher says to you… If Johnny works 2 hours he’ll have \$2 but if he works 6 hours he’ll have \$4. (He gets paid the same for each hour of work.) Draw a line showing the relationship between hours worked and money he has.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
.. I am interested in the relationship between
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 09/25/2008 for the course PSYCH 305 taught by Professor Freeman during the Fall '08 term at UVA.

### Page1 / 23

13regression.stud200 - Psyc 305 Week 7 Regression At the end of these two classes you should Understand the relationships between z scores

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online