Seattle Seahawks Playoff Chances 2014

Beat St. Louis 20-6, average seed up 0.5 to 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
Seattle 17 San Francisco 7 +7.7
+0.5
Detroit 16 Minnesota 14 -2.9
-0.0
Philadelphia 27 Dallas 38 +1.4
Buffalo 21 Green Bay 13 +1.2
+0.1
St. Louis 6 Arizona 12 -0.7
-0.3
Week of 12/18100.0*Chance in playoffs100.0*Average seed
Washington 27 Philadelphia 24 +3.3
Week of 12/28100.0*Chance in playoffs100.0*Average seed
Seattle 20 St. Louis 6 +0.5
San Francisco 20 Arizona 17 +0.2
Games Above .500
Chance Will Make Playoffs