How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 2/7100.0*Chance wins regular season title100.0*Average seed
Hamilton 2 Bowdoin 3 +0.9
+0.5
Tufts 1 Conn College 3 -0.2
Amherst 5 Bowdoin 3 -0.1
-0.4
Amherst 6 Colby 2 +0.1
Hamilton 2 Colby 3 -0.1
Wesleyan 2 Middlebury 1 +0.1
Week of 2/14100.0*Chance wins regular season title100.0*Average seed
Hamilton 3 Tufts 1 -0.4
Bowdoin 4 Wesleyan 3 In
+0.7
Middlebury 2 Williams 1 -0.1
-0.2
Bowdoin 4 Trinity 5 -0.1
-0.4
Colby 2 Trinity 4 +0.2
Colby 2 Wesleyan 5 +0.1
Hamilton 2 Conn College 5 -0.1
Week of 2/21100.0*Chance wins regular season title100.0*Average seed
Conn College 1 Bowdoin 5 +0.7
Middlebury 5 Hamilton 2 -0.5
Tufts 4 Bowdoin 3 -0.3
Middlebury 3 Amherst 2 -0.1
Conn College 4 Colby 0 +0.1
Tufts 1 Colby 4 -0.1
Games Above .500
RPI