snip:"I created a spreadsheet that listed the stations and saved the ratings information from the above linked page. Unfortunately AAR doesn't note when a station joined them and I only started this project a few months ago, so my spreadsheet in some cases claims listeners in past quarters that weren't really listeners then. Since that overestimates previous quarters, though, that only serves to underestimate the growth curve, so it's a fairly conservative measure. Also, not all data is out for the Spring 2005 quarter, but enough is out that I can project pretty much what the quarter will look like overall.
The first question I wanted to answer was if AAR was growing or not, so I divided every quarter's totals by the Winter 04 quarter (this is called "normalizing"). I found that there was a bump around election time and then a sag afterwards. That makes sense, but I wanted to know if the conservative radio market had seen the same thing to the same degree."
Here is the link to the full article:
http://www.dailykos.com/story/2005/7/8/92849/52300________________________________________
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