Pittsburgh Steelers Playoff Chances 2014 50/50

Beat Cincinnati 27-17, average seed up 1 to 3
11-0-5   .688

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
Atlanta 20 Pittsburgh 27 +14.2
+0.9
San Diego 10 Denver 22 +3.8
+0.1
Baltimore 20 Jacksonville 12 -3.0
-0.2
Cleveland 0 Cincinnati 30 +1.9
-0.1
New England 41 Miami 13 +1.8
+0.0
Kansas City 31 Oakland 13 -1.3
-0.1
Buffalo 21 Green Bay 13 -1.2
-0.1
Indianapolis 17 Houston 10 +0.8
+0.0
Week of 12/18100.0*Chance in playoffs100.0*Average seed
San Francisco 35 San Diego 38 -0.3
Week of 12/28100.0*Chance in playoffs100.0*Average seed
Pittsburgh 27 Cincinnati 17 +1.0
Games Above .500
Chance Will Make Playoffs