New England Patriots Playoff Chances 2014 50/50

Lost to Buffalo 9-17, average seed unchanged at 1
12-0-4   .750

How are these numbers calculated?

Big Games

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

Week of 12/11100.0*Chance in playoffs100.0*Average seed
New England 41 Miami 13 In
+0.5
Buffalo 21 Green Bay 13 -0.8
-0.1
Atlanta 20 Pittsburgh 27 -0.3
-0.1
San Diego 10 Denver 22 +0.3
-0.1
Cleveland 0 Cincinnati 30 -0.3
-0.1
Baltimore 20 Jacksonville 12 -0.2
Kansas City 31 Oakland 13 -0.2
Indianapolis 17 Houston 10 +0.1
-0.1
Week of 12/18100.0*Chance in playoffs100.0*Average seed
Cincinnati 37 Denver 28 +0.1
Week of 12/28None
Games Above .500
Chance Will Make Playoffs