New York Giants Playoff Chances 2011 50/50

Beat Dallas 31-14, playoff odds up 49.8 to 100%
9-7-0   .563

How are these numbers calculated?

Big Games

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

Week of 12/15100.0*Chance in playoffs100.0*Average seed
NY Giants 10 Washington 23 -14.6
-0.9
Tampa Bay 15 Dallas 31 -3.2
-0.1
Philadelphia 45 NY Jets 19 -1.6
-0.1
Oakland 27 Detroit 28 -0.7
Atlanta 41 Jacksonville 14 -0.4
Arizona 20 Cleveland 17 +0.3
-0.1
Chicago 14 Seattle 38 +0.2
-0.0
Week of 12/22100.0*Chance in playoffs100.0*Average seed
NY Jets 14 NY Giants 29 +18.8
+1.3
Dallas 7 Philadelphia 20 +6.5
+0.2
Cincinnati 23 Arizona 16 +0.2
Green Bay 35 Chicago 21 +0.1
Seattle 17 San Francisco 19 +0.1
Washington 26 Minnesota 33 +0.1
Week of 1/1100.0*Chance in playoffs100.0*Average seed
NY Giants 31 Dallas 14 In
+2.0
Arizona 23 Seattle 20 +0.4
Minnesota 13 Chicago 17 -0.1
Philadelphia 34 Washington 10 -0.1
Games Above .500
Chance Will Make Playoffs