correlation between "luck" and efficiency metrics, or who the coach is.
Go to kenpom.com and look at the "luck" ranking of the top 20 and bottom 20 teams – it's all over the map. Then look at year-over-year "luck" rankings of any particular coach, and you'll see there's no consistency (with one rare exception:
http://www.tigerboard.com/boards/view.php?message=18953821 )