[Jazzy3113]

I know you can get totals and spreads for the history of the nfl so why limit your sample size?

Also, the best way to do it would just be to set up a test hypothesis with whatever interval you feel comfortable with, but who is to say what percentage drop is significant?

Personally, I think there are several variables that could throw the findings off. For those errrant games, was a huge away favorite playing, weather, etc? Maybe since there are more teams in the nfl there is not as much parity and the talent pool has become diluted. What I mean is that some teams are finding it hard to compete at an elite level adn this is causing a skew in the home field results. This happens as sports expands to more teams.

With all these types on confounding variables and not using more years to create a larger sample size, I think home field advantage is not losing its luster.