How are these numbers calculated?

Big Games

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

Week of 3/1100.0*Chance in playoffs100.0*Average seed
Dallas 20 Houston 27 +11.1
+0.3
St Louis 23 Seattle 16 +3.2
+0.1
New York 17 LA 14 +1.9
+0.1
Tampa Bay 25 DC 0 +0.3
If winner is:HomeTieAway
Week of 3/8100.0*Chance in playoffs100.0*Average seed
Houston vs Seattle+5.5+1.4-5.5
+0.2+0.0-0.2
Dallas vs New York-1.2*+0.3+1.2
-0.1*+0.0+0.1
LA vs Tampa Bay-0.9*+0.2+0.9
DC vs St Louis-0.3*+0.4+0.3

* A starred number could be exactly 0 or just really small. The simulation did not run long enough to know.

What If

Chances based on how well the Houston finish out the regular season.   Explain

100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs1234Count
8.5-10In1001,058,114*
84-2-0In10002,252,628
3-1-2In1006
7.53-2-1In9917,239
73-3-0100.0%94603,002,628
2-2-2In10010
6.52-3-199.9851507,334
62-4-096.56234302,252,300
1-3-2In67336
5.51-4-188.93554113,535
51-5-057.21245366900,169
0-4-233.333673
4.50-5-124.11236214688
40-6-03.844057153,276
Total:93.6%7914529,637,936

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs