Lecture 6: Correlational Research
10/12/05, 10/17/05
- "Two Disciplines"
- Group comparison
examine the differences between 2 groups of people on one variable
- Correlational research
- The Basics
- Scatterplots
- Direction:
- Coefficient of Determination
- Linearity
- Restriction of Range
- Regression
- Predict Y from X
- Line shows the center of the relationship
- Least-squares solution
- Linear equations
- Interpreting Correlations
- Correlation does not mean causation
- In order to say X causes Y...
- Directionality
- Third variable problem
- Correlation as a statistic vs. correlation as a study design
- Using Correlations
- Why bother w/ correlational design if you can’t determine causality?
- Ethics
- When the goal is to predict
- Examining...
- Simply wanting to know the strength of the relationships between...
- Multivariate Analysis
- Bivariate vs. Multivariate
- Multiple Regression
- Factor Analysis
Research
Methods Page
Last updated: 10/11/05