NCAA tournaments - Need help with O/U

[renata]

Yesterday from 47 games played it was 27 over vs 20 under, but in the 1st half was 20 over vs 27 under. Have any know historical data about O/U of NCAA tournaments? Is there noticeable tendency for
under in the 1st halfs and over in the whole matches?
My second question is about www.vegasinsider.com.
They offers matchup analysis in which they project total points for every game. With help their matchup analysis yesterday I selected 15 O/U, 11 was right, 4 was lost. Had I good fortune or are their analysis good?
Thank everybody for answer.

 

[Valuist]

These are general trends and could change due to the fact that many teams are playing on zero days rest. But these have been the strong trends so far: (during the regular season)

ACC: Over
Big Ten: Under
Big East: Under
Big Twelve: Over
Pac 10: Over
SEC: Under

Obviously these are generalizations but they've held up well. I'd be careful today, with the fatigue factor affected each team differently.