How are these numbers calculated?

Big Games

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

Week of 11/10100.0*Chance wins regular season title100.0*Average seed
Stanford 27 Oregon St 23 -0.9
+0.1
Cal 17 Oregon 59 +0.8
+0.0
WSU 36 UCLA 44 -0.1
Week of 11/17100.0*Chance wins regular season title100.0*Average seed
Oregon 14 Stanford 17 (ot)-16.2
-0.7
Oregon St 62 Cal 14 -0.3
UCLA 38 USC 28 -0.1
Week of 11/24100.0*Chance wins regular season title100.0*Average seed
Oregon St 24 Oregon 48 In
+0.8
UCLA 17 Stanford 35 -0.1
Points
Chance Will Win Regular Season Title