{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

PS102Lecture21

# PS102Lecture21 - Lecture21 RegressionAnalysis Regression...

This preview shows pages 1–5. Sign up to view the full content.

Linear Regression Analysis Political Science 102 – Introduction to Political Inquiry Lecture 21

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

View Full Document
Regression Analysis Regression analysis is the predominant statistical tool used in the social sciences Simple and versatile AKA: linear regression, ordinary least squares, OLS Central concept is fitting a line through data to describe relationships between X and Y
Notations for Regression Line  Mathematical notations for the straight line 10th Grade Geometry Statistics Literature Econometrics Literature These are all equivalent statements We may use stats or and econ notation for the model. Just remember that B 0 and a are the same thing. y m x b = + Y a b X e i i i = + + Y B B X e i i i = + + 0 1

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

View Full Document
Translating Math into English Linear model implies that the dependent variable is directly proportional to the independent variable. A theory implying that Y increases in direct proportion to an increase in X, implies a specific mathematical model of behavior - the linear model. Example: Economic performance and incumbent vote share ALL statements of relationships between variables imply a mathematical structure. Even if we don’t like to phrase our theories in these terms, they DO imply mathematical relationships Courses in regression analysis are about making this basic linear model fit more nuanced theories
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 22

PS102Lecture21 - Lecture21 RegressionAnalysis Regression...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online