Long Term Trend of O'Reilly vs. Olbermann TV Ratings:
Some folks commented that they thought the previous linear regressions weren't the right way to look at the long term trend, and I agree. We have data since late November, 2007 and using that as a "start" point for a linear trend was somewhat arbitrary. The trend lines above are 20 day (4 week) moving averages. I'm not sure I'll stick with that period, it might be too short, but that's what I'm going with this week.
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Nielsen Cable Network Coverage Estimates (as of March, 2008)
CNN/HLN: 96.93 million HHs
CNBC: 95.13 million HHs
FNC: 94.55 million HHs
MSNBC: 91.59 million HHs
Nielsen TV Ratings Data: ©2008 The Nielsen Company. All Rights Reserved.