Dallas Cowboys Playoff Chances 2012-Final 50/50

Lost to Washington 18-28, playoff odds down 50 to 0%
8-8-0   .500

How are these numbers calculated?

Big Games

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

Week of 12/13100.0*Chance in playoffs100.0*Average seed
Dallas 27 Pittsburgh 24 +12.7
+0.9
Atlanta 34 NY Giants 0 +6.7
+0.3
Green Bay 21 Chicago 13 +2.0
+0.1
Washington 38 Cleveland 21 -2.0
-0.1
Seattle 50 Buffalo 17 -1.1
New Orleans 41 Tampa Bay 0 -0.3
-0.0
Arizona 38 Detroit 10 +0.0
Carolina 31 San Diego 7 +0.0
Week of 12/22100.0*Chance in playoffs100.0*Average seed
New Orleans 34 Dallas 31 -6.2
-0.6
Baltimore 33 NY Giants 14 +5.0
+0.3
Chicago 28 Arizona 13 -2.1
-0.1
Washington 27 Philadelphia 20 -0.3
-0.0
St. Louis 28 Tampa Bay 13 -0.3
-0.1
New England 23 Jacksonville 16 +0.2
Seattle 42 San Francisco 13 +0.2
Denver 34 Cleveland 12 -0.2
-0.0
Carolina 17 Oakland 6 +0.2
Week of 12/30100.0*Chance in playoffs100.0*Average seed
Washington 28 Dallas 18 Out
-3.0
Seattle 20 St. Louis 13 +0.3
Carolina 44 New Orleans 38 +0.2
Games Above .500
Chance Will Make Playoffs

Lottery

We are out of the playoffs. Here are the big games and what ifs for draft seeds.
Although it might be more fun to go down swinging.

Big Games

Week of 12/13100.0*Lottery seed
Dallas 27 Pittsburgh 24 -1.6
Atlanta 34 NY Giants 0 -0.4
Washington 38 Cleveland 21 +0.2
Cincinnati 34 Philadelphia 13 +0.1
Carolina 31 San Diego 7 -0.1
New Orleans 41 Tampa Bay 0 -0.0
Minnesota 36 St. Louis 22 -0.0
Week of 12/22100.0*Lottery seed
New Orleans 34 Dallas 31 +0.8
Baltimore 33 NY Giants 14 -0.3
St. Louis 28 Tampa Bay 13 +0.1
Chicago 28 Arizona 13 +0.1
Minnesota 23 Houston 6 +0.1
Denver 34 Cleveland 12 +0.1
Seattle 42 San Francisco 13 -0.1
Atlanta 31 Detroit 18 -0.1
New England 23 Jacksonville 16 -0.0
Washington 27 Philadelphia 20 +0.0
Carolina 17 Oakland 6 -0.0
Week of 12/30100.0*Lottery seed
Washington 28 Dallas 18 +3.8
Seattle 20 St. Louis 13 -0.3
San Francisco 27 Arizona 13 +0.0