Professional sports are like the entertainment industry. The success of the individual organizations and of the leagues depends largely upon their public image and general perception. Baseball teams are always trying to appeal to a new or broader demographic to sell tickets to. Being a good team and winning games is probably the most straightforward way of drawing fans. People enjoy watching exciting action and watching their team succeed. On the other hand, though, some fans aren’t as concerned with the on-field play, and are only looking to have an enjoyable afternoon at the ballpark. To appeal to those fans, teams look to improve the experience of watching a game, which might mean improving the amenities of the stadium or providing free giveaways for fans upon entrance. Basic economic principle tells us that people respond to incentives. The key is determining exactly what those incentives are.
My first instinct was to use as many variables as possible. Looking through prior research, I found 16 possible on field and off field potential explanatories and used them to create 31 different possible regressions. Most of those, however, were incorrectly specified according to the Ramsey RESET test. What I got out of that, though, was that most of those regressors are completely irrelevant or their association with percent attendance is not in the expected direction. These are below:
By mixing and matching functional forms of the above variables I was able to come to a correctly specified regression with all variables significant at 5%.