Advanced Quantitative Analysis: Lab
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Course Info

Instructor:  John Ahlquist
Lab Instructor:  Carlisle Rainey
Lab Time:  Friday, 1:25-3:00
Lab Place:  HCB 302


Lab
Title
Topics
Lab Materials
Data Files
Other Potentially Useful Files
1
Introduction to R Programming
Libraries, some programming technicalities, loading data, summarizing data, linear regression, some LaTeX tips
Lab 1, Presentation
anes1992.dta, anes1992.csv
Code for histograms,
some humor,
detailed intro
2
Graphics in R
Indexing and loops, the plot() function in detail, other graphics functions.
Lab 2, Exercise, Presentation
None
margins, colors, complete plot

Maximum Likelihood Estimation in R
Introduction to Zelig,
functions, optimization
Lab 3,
Zelig example,
Presentation
None
Normal regression in Zelig, simulation paper
4
Logit and Probit in R
Zelig for logit and probit,
plotting functions,
plotting inferences
Misc, Analysis
CSES subset
Logit and probit regression in Zelig
5
Evaluted Models of Binary Variables
Gradients for optim(),
cross-validation in R,
ROC and BIC for logit models
gradient, cross-validation,
ROC curves
None

6
Ordered Logit and Probit in R
Ordered logit and probit,
categorical explanatory variables,
contrasts
Lab 6
None

7
Unordered Logit and Probit in R
Zelig for unordered categorical models, Q&A
None
None

8
Poisson Regression in R
Zelig for Poisson regresson,
Q&A
None
None

9
Multi-Equation Models in R
Zelig for multi-equation models,
Q&A
John Ahlquist's sample code,
simulating distributions


10
Multiple Imputation in R
Amelia, other software,
Q&A for class projects
Amelia




Resources for R

Link
Description
Wikipedia on R
If you are like me, you turn to Wikipedia as an introduction to people, ideas, math, and software.
Wikibooks on R programming
Excellent source on programming in R with lots of examples. Organized by topic as well.
Simon Jackman's Take on R
Pages 20-22 of The Political Methodologist, vol, 11, no 2. Also see the two articles on computing with R that follow Jackman's piece.
Installing R and Text Editors
This .pdf gives an excellent set of instructions for downloading and installing R and choosing a text editor. It has equally good discussions of R for Windows and Mac.
Quick-R
Quick-R is a website designed to help users of other statistical packages such as Stata, SAS, and SPSS, transition smoothly into R. This site does assumes little, but some knowledge of statistics.
R manuals
These are the official manuals for the R packages. These are probably too technical for new R users, but after becoming more familiar with the software, these are very useful.
A Course on R
An online course maintained by John Fox designed to introduce students to R.
Google's R Style Guide
A set of stylistic rules for writing R scripts. These rules are designed by the R user community at Google. Using a consistent style makes your code easier to read and correct.
Text editor instructions
Andrew Gelman's instruction for setting up text editors for R in Windows
Zelig
Gary King's software that allows estimating and working with inferences from many common models in political science. See Imai, King, and Law (2008).

Resources for LaTeX

Link
Description
sample2.pdf, sample2.tex
The .pdf gives lots of useful tips as well as code to create LaTeX documents. The .tex files gives the LaTeX code used to produce the .pdf. Courtesy of Matt Golder. Here is a .zip file containing the .bib file and images necessary to compile. Here Matt provides the LaTeX code for a paper recently published in AJPS as well as some information on posters.
LaTeX code for first lab
This is just the LaTeX code for the Beamer presentation slides for the first lab.