Wednesday, May 10, 2017

NBA Salary Inequality for the 2016-17 Season

Now that the NBA playoffs are well underway, I thought I would come back to looking at salary inequality among NBA players.  As I wrote earlier, NBA salary inequality had been improving over the last few years.  So I again I collected the NBA salary data from ESPN and calculated the Gini coefficient for the league as a whole.  For the most recent season, we see that salary inequality has taken a step backwards, with the Gini coefficient now 0.5519 and is worse than the US Gini coefficient for 2014 of 0.480.

Saturday, May 6, 2017

NCAA Football Bowl Subdivision Attendance Analysis

Today I want to look at NCAA FBS Home Game Attendance over the last eleven years.  I gathered the data from the NCAA's website and have plotted the data below for each season from 2006 to 2016 (last year).  Please note that I am using total home regular season attendance, and since some teams do play different amounts of home games from one year to the next, this might be skewing the data.  But as you can see below, most teams attendance from one season to the next looks fairly similar.  Yet, looks can be deceiving, so below I talk about a simple statistical analysis of home team regular season attendance.

Using a t-test, which is a statistical test of significance among columns (seasons) of data; I find that comparing consecutive seasons, that no sets of consecutive seasons are statistically different from each other.  Yes, teams attendance and league average attendance have increased and recently decreased during this time period, but I cannot rule out random chance for this occurring as well.  Thus, I would conclude that statistically, NCAA FBS attendance is not statistically different in consecutive seasons during this time period.