B10 fouls and foul differentials

I decided to do some geeky number crunching. The following numbers are for all B10 games as of today.

My first question was "How many fouls on average do the various B10 teams get called for?" In other words, if I tell you that Indiana played Northwestern and got called for 16 fouls and Northwestern got called for 14 fouls, that doesn't really tell you anything unless you know how many fouls a team gets on average. Here it is:



The way to read this chart is to say "In B10 games Indiana gets called for an average of 21.18 fouls per game."

Obviously, Indiana leads the B10 in fouling, while OSU and Wisconsin gets called for the fewest fouls.

Next, I asked mysefl, "Alright, but different teams play different styles that tend to draw different amounts of fouls from their opponents, so how does that break down across the B10?" Here it is:



The way to read this chart is to say "In B10 games Indiana opponents gets called for an average of 18.82 fouls per game."

Note that once again Wisconsin leads the B10 in drawing fouls. But also note Northwestern on the other side. Northwestern opponents don't foul them much at all. Bizarre.

Then the question was "If we ignore home versus away and just look at foul differentials in ALL games, what teams get the biggest advantages?" Here it is:



The way to read this chart is to say, "In B10 games Indiana gets called for an average of 2.37 more fouls than their opponents." Again, this has nothing to do with homecourt.

Then I asked, "For a given team, how many more fouls do they get called for on the road versus at home?" Here it is:



The way to read this chart is to say, "In B10 games Indiana gets called for an average of 4.43 more fouls per game when they are on the road versus at home."

Note that Indiana and Purdue are far and away the worst of this group - the Hoosier state teams pile up the fouls when we leave home. Also note that Michigan actually gets called for FEWER fouls when they leave home.

Then finally I asked myself, "What is the homecourt advantage for each team -- how many fewer fouls do they get called for at home versus the number of fouls called on their opponents at home?" In other words, the chart above looks at Indiana in Assembly Hall versus Indiana on the road. The chart below looks at Indiana in Assembly Hall versus our opponents in Assembly Hall. Here it is:



The way to read this chart is to say, "In B10 games, Indiana's opponents are called for essentially the same number of fouls as Indiana."

Note again that UW and OSU see huge advantages at home, and once again Northwestern is completely bizarre.

I've got en Excel spreadsheet with the raw data if anyone wants to run other calculations.