Houston Astros Playoff Chances 2015-1 50/50

Did not play, playoff odds up 11.5 to 42.9%
1-0   1.000

How are these numbers calculated?

Big Games

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

Week of 4/5100.0*Chance in playoffs100.0*Average seed
Astros 2 Indians 0 +17.1
+3.0
Mariners 0 Angels 2 +4.7
+0.1
Athletics 1 Rangers 3 +4.7
+0.1
Rays 5 Orioles 6 +2.2
+0.2
Phillies 0 Red Sox 8 -1.3
-0.2
Games Above .500
Chance Will Make Playoffs