Friday, September 18, 2009

Importance of Week 1 (Lies and the Lying Liars Who Tell Them)

I should start a new category called "Deceptive Facts"....or something like that.  If only I knew how to actually modify my website.

I've been hearing recently about how teams who lose in week 1 are less likely to reach the playoffs.  This strikes me as one of those stats that is incredibly obvious.  If you choose a given week and limit your sample to the teams who LOST that week, you're going to find a pretty strong correlation to teams who don't make the playoffs.  (Quick note - for those who didn't know, winning is a pre-requisite to making the playoffs).


To prove this, I decided to look at the average number of teams who lose in a random week of the NFL - and how many of them make the playoffs.  My theory is that week 1 will look just like every other week.  (And, if you're reading this, I must be right.  Otherwise I would have deleted the post).

The stat I recently heard is that, on average, three out of the 16 teams who win in week 1 end up making the playoffs.  I looked at the numbers from 2000-2009 and the actual figure is closer to 4 (3.9) - about 25% of teams who lost in week 1.
Let's compare that to....say.....week 4.  Well, on average, 22% of teams who lose in week 4 end up making the playoffs.  Week 12?  25%.  Week 7?  Almost 26%.  Week 9?  19%.


See table 1 -a for the full breakdown by week.

What the table shows is that teams who make the playoffs spread their losses across the season.  There is no individual week that stands out as "dooming" a team from making the playoffs.

Week 9 appears to be the week where, if you lose, you're least likely to make the playoffs.  But, I've never heard a play by play man turn to his color guy and say, "This is all important week 9.  Teams know - if they lose during week 9, it's an uphill climb to the playoffs."

Anyway, just an observation.  There must be a million misleading stats out there.  I'm going to do my best to find them.

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