Category Archives: Graphics

Pearson’s r: Not a good measure of electoral persistence

Posted on December 30, 2012 by Jason

Pearson’s product-moment correlation, \(r\), is an incredibly useful tool for getting some idea about how two variables are (linearly) related. But there are times when using Pearson’s \(r\) is not appropriate and, even if linearity and all other assumptions hold, … Continue reading →

Posted in Data analysis, Graphics, Poland, Political parties, R | 1 Comment

A simple frequency plot

Posted on April 8, 2011 by Jason

I’m currently working on a paper that uses Polish survey data (EVS 2008). I am specifically looking at regional variation in particular responses. Because there are only around 1800 observations in the survey, which are split across 66 subregions of … Continue reading →

Posted in Data analysis, Graphics, R | 1 Comment