Adam M. Enders

Intro to R Material

• Basics of R code

• Graphics code

• Cleaning and Data Prep code

• 2016 ANES data

• Intro R slides

• Graphics slides

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Data Theory & Measurement

• MORALS Optimal Scaling R code

• MORALS Optimal Scaling data

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Summated Rating Scale

• SRM and Reliability R code

• SRM and Reliability data

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Cumulative Scaling

• ​​Mokken Scale Analysis code

• Knowledge data

• Suspicion 2014 CCES data

• Ordinal MSA code (for suspicion data)

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SVD & Biplots

• Understanding the SVD

• SVD and Biplot code

• Political Sophistication data, 2012 ANES

• Vector-based regression in 3D (end of code, must run bivariate first)

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Principal Components Analysis

• PCA Example code

• More SVD/Biplot/PCA examples

• State Economy Indicators data

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Factor Analysis

• Factor Analysis example code

• Factor Analysis "by hand" code

• Group Thermometers, 2012 ANES data

• Racial Resentment data

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Multidimensional Scaling

• Classical MDS and MDS "by hand" code

• Country Similarities data

• Metric and Nonmetric MDS via smacof code

• 2004 ANES Thermometer data

• Interpreting MDS Solutions code

• Degenerate Solutions and Correlations as Input code

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Correspondence Analysis

• CA "by hand" code

• CA and MCA code

• Issue Attitudes, 2012 ANES data

• Vote Choice, 2016 ANES data

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