Dartmouth College

Political Representation in the U.S. (Fall 2018)
Quantitative Political Analysis (Fall 2018)


UMass Amherst

Intro to American Politics (Fall 2017, Spring 2018)
Undergraduate Research Engagement Program (Spring 2016, Fall 2016, Spring 2017, Spring 2018)
Intro to American Politics, teaching assistant (Fall 2016, Spring 2016)
Race and Politics, teaching assistant (Fall 2015)
Women and Politics, teaching assistant (Spring 2014)
Controversies in Public Policy, teaching assistant (Fall 2013)


R Tutorials:

Quick and dirty run-throughs of some survey methods exercises in R:

  • Post-Stratification Raking: Questions and Answers about Creating Weights Last week I received some questions about my methods tutorial on creating post-stratification weights. Problems always arise (at least for me) when trying to apply a bit of code ...
    Posted Oct 21, 2017, 4:03 PM by Mia Costa
  • Creating Post-Stratification Weights in R My last post went over how to use pre-specified variable in a dataset to weight survey data. But what if you want to create the weights yourself? If you ...
    Posted Oct 21, 2017, 4:03 PM by Mia Costa
  • Using Weights in R In a dataset, survey weights are captured by a variable that indicates how much each respondent should “count.” For example, a respondent who has a 1 for a weight variable ...
    Posted Oct 21, 2017, 4:02 PM by Mia Costa
  • Count Models in R To demonstrate how to analyze count dependent variables, we first need to create a dependent variable that is a count. Again use the 2008 CCES survey (http://people.umass.edu ...
    Posted Oct 21, 2017, 4:02 PM by Mia Costa
  • Multinomial Logit Models in R For cases when the dependent variable has unordered categories, we use multinomial logit. For example, variable cc309 in the 2008 CESS (http://people.umass.edu/schaffne/cces08.dta) asks respondents ...
    Posted Oct 21, 2017, 4:02 PM by Mia Costa
  • Ordinal Logit/Probit Models in R An ordinal logit model is used when you have a dependent variable that takes on more than two categories and those categories are ordered. For example, likert scales, common in ...
    Posted Oct 21, 2017, 4:01 PM by Mia Costa
  • Logit/Probit Models in R For this example, we'll use the 2008 Cooperative Congressional Election Study. You can download it here from Brian Schaffner's website (http://people.umass.edu/schaffne/cces08.dta). Download ...
    Posted Oct 21, 2017, 4:01 PM by Mia Costa
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