I often compare the Celtics November stats to the current month to look for the teams' progression, or regression, in certain areas. I just finished a November-January comparison of free-throws-attempted. Boston went from second-to-last in FTA (29th) in November to dead last (30th) for the month of January. What is going on? Is it referee bias? Do the guys in green not go into the paint enough? Here's a look at it.
Here is the picture of points-in-the-paint by Boston. In November, they ranked 29th with 37.