Understanding Statistical Models and their Social Science Applications
STATS 209

Winter 2009
Page 1 of 4
Stat209/Ed260 D Rogosa
1/18/09
Assignment 2.
Experiments and Observational Studies
Formulation for causal inference
1. NeymanHollandRubin formulation
Create some counterfactual data (fo
Understanding Statistical Models and their Social Science Applications
STATS 209

Winter 2009
Page 1 of 2
Stat209/HRP239/Ed260 D Rogosa
1/12/09
Assignment 1.
Review and some extensions: Multiple Regression
1. Yule's Data via Freedman (deep review regression)
Yule (1899), An investigation into
Understanding Statistical Models and their Social Science Applications
STATS 209

Winter 2009
Page 1 of 10
Stat209/ Ed260
3/9/09
Solutions
Week 9 Exercises: Lord's Paradox, Repeated measures anova, Growth Curves
1. Lord's paradox example
Basic idea here is to illustrate the contrast between ad
Understanding Statistical Models and their Social Science Applications
STATS 209

Winter 2009
Page 1 of 4
Stat209/Ed260
3/9/09
Week 9 Exercises: Lord's Paradox, Repeated measures anova, Growth Curves
1. Lord's paradox example
a. construct a twogroup prepost example with 20 observations in
ea
Understanding Statistical Models and their Social Science Applications
STATS 209

Winter 2009
Page 1 of 3
Stat209/Ed260 D Rogosa
2/26/09
Assignment 8.
Matching and propensity score methods
cf Lab 4 for aditional matching exercises
Problem 1.
Matching to increase precision: Randomized blocks de
Understanding Statistical Models and their Social Science Applications
STATS 209

Winter 2009
Page 1 of 2
Stat209/Ed260 D Rogosa
2/28/09
Solutions Assignment 7.
Compliance and experimental protocols; intent to treat
Problem 1
> library(vcd)
# visualizing categorical data is a package that give
Understanding Statistical Models and their Social Science Applications
STATS 209

Winter 2009
Page 1 of 3
Stat209/Ed260 D Rogosa
2/20/09
Assignment 7.
Compliance and experimental protocols; intent to treat
Problem 1
In the linked materials from Michael P. LaValley Boston
University "Intentto
Understanding Statistical Models and their Social Science Applications
STATS 209

Winter 2009
Page 1 of 3
Stat209/Ed260 D Rogosa
2/20/09
Solutions Assignment 6.
Instrumental variable methods, simultaneous equations
see also Lab3 exercises
Problem 1. Schneider et al Public School choice
reprin
Understanding Statistical Models and their Social Science Applications
STATS 209

Winter 2009
Page 1 of 1
Stat209/Ed260 D Rogosa
Assignment 6.
2/14/09
Instrumental variable methods, simultaneous equations
see also Lab3 exercises
Problem 1.
Freedman section 8.7, Schneider et al Public School c
Understanding Statistical Models and their Social Science Applications
STATS 209

Winter 2009
Page 1 of 8
Stat209/Ed260 D Rogosa
2/20/09
Solutions Assignment 5.
The many uses and forms of analysis of covariance
Problem 1
The prediction equation to work from is
S = 1900 + 230*B + 18*A + 100*E +
Understanding Statistical Models and their Social Science Applications
STATS 209

Winter 2009
Page 1 of 3
Stat209/Ed260 D Rogosa
Assignment 5.
2/8/09
The many uses and forms of analysis of covariance
1.Background: categorical predictors
A study of several hundred professors' salaries in a lar
Understanding Statistical Models and their Social Science Applications
STATS 209

Winter 2009
Page 1 of 6
Stat209/Ed260 D Rogosa
1/31/09
Solutions Assignment 4.
Multilevel data, ecological fallacy
Problem 1
Following p.750 Greenland and Robins American Journal of
Epidemiology Vol. 139, No. 8:
Understanding Statistical Models and their Social Science Applications
STATS 209

Winter 2009
Page 1 of 3
Stat209/Ed260 D Rogosa
1/30/09
Solutions Assignment 3.
Problem 1,
first part
>
#
>
>
>
>
# do BlauDuncan path analysis from correlation matrices
predictor correlation matrices
RxxBD1 = ma
Understanding Statistical Models and their Social Science Applications
STATS 209

Winter 2009
Page 1 of 1
Stat209/Ed260 D Rogosa
Assignment 3.
1/25/09
Path Analysis
problem 1. Freedman, BlauDuncan example
(computations: replicate class handout, plus questions
scan of pp.8081 at
http:/wwwsta
Understanding Statistical Models and their Social Science Applications
STATS 209

Winter 2009
Page 1 of 4
Stat209/Ed260 D Rogosa
1/25/09
Solutions
Assignment 2.
Experiments and Observational Studies. Formulation for causal inference
1. NeymanHollandRubin formulation
Create some counterfactu
Understanding Statistical Models and their Social Science Applications
STATS 209

Winter 2009
Page 1 of 6
Stat209/ D Rogosa
1/18/09
Solutions Assignment 1.
Assignment 1.
Review regression, properties of regression coefficients
1. Yule's Data via Freedman (deep review regression)
The purpose he