Correlation, Causation, and
Confounding
MARCH 24, 2016
Causation
2
We have established a relationship between x
and y, does that mean that x causes y?
x
y
NO!
An association between x and y is necessary for
causation, but not sufficient
Example:
The numbe

Multiple Regression
MARCH 31, 2016
Multiple Regression
3
Significant Testing
We know how to test if each coefficient is significant
What if we want to know if all the x variables together
have a significant effect on y
Hypotheses:
H0: B1=B2=Bk=0
Ha: at

Linear Regression
MARCH 10, 2016
Linear Function
2
y = + x
y-intercept
Tells us the value of y when x=0
slope
Describes the relationship between x and y
When x increases by 1, y increases by
Example: if the relationship between years of experience
at

Regressions with Binary
Outcomes
APRIL 14, 2016
Announcements
Teaching evaluations are now available,
please take a few minutes to do this.
Back to our example from Tuesday
Multiple Regression
4
Binary Outcomes
We talked about how you deal with binary x

Final Review
APRIL 26, 2016
Announcements
2
Problem Set #3 returned end of class
Group Presentations grades on Sakai
Teaching Evals!
Review
Please ask questions!
Dr. Sarah Fuller - Spring 2016
Multivariate Relationships
x1
3
Spurious Relationship
x2
. reg

Chi-squared & Linear
Regression
MARCH 8, 2016
Announcements
Midterm grades up on Sakai
You will get the test back on Thursday
Please come and talk to me if you have any concerns
about your grade
Drop deadline is today
Recitation this week please attend

Linear Probability Models
& Logistic Regression
APRIL 12, 2016
Announcements
Thursday office hours moved to 11am
Stata Work
Open up data set in stata (posted on sakai under
datasets example from 3.29.16)
Run the following regression:
y=total per pupil exp

Multiple Regression
MARCH 29, 2016
Announcements
Office hours Thursday CANCELLED
Email me for an appointment
Pick up assignments after class
Problem Set 2
Problem Set 1 FINAL CALL
Midterm FINAL CALL
Multiple Regression
3
Bivariate Regression
Populatio

Multiple Regression
APRIL 5, 2016
Announcements
Memo 1 Returned on Thursday
Upcoming Due Dates
Problem Set 3 April 19th
Group Presentations April 19th and 21st
Assignment posted by Thursday
Memo 2 April 26th
Assignment posted tonight
Assignment posted by

Interactions, Binary
Outcomes, Etc.
APRIL 19, 2016
Reminders
Please complete teaching evaluations for me
and the TAs!
Problem Set 3 Due right now!
Answer key will be available at the end of class
Group Presentation Today and Thursday
Memo 2 Due Next Tues

Interactions and More
APRIL 7, 2016
Grades
The Bad News
Memo mean=68.1% median=70.0%
Current overall grade mean=76.2% or C
The Good News
~58% of the grade is not yet on the books
5% Participation
5% Group Research Questions & Presentations
3 1/3% Probl

Linear Regression
MARCH 22, 2016
Announcements
Memo 1 Due on Thursday!
Submit written document and log file
Please write as if you are addressing a policymaker,
not as if this is an assignment (e.g. dont number the
parts of the assignment)
Save your do