How are these numbers calculated?

Big Games

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

Week of 3/8100.0*Chance in playoffs100.0*Average seed
Dallas 12 New York 30 +3.7
+0.1
Houston 32 Seattle 23 -2.6
-0.1
LA 41 Tampa Bay 34 -1.3
-0.0
DC 15 St Louis 6 -0.3
If winner is:HomeTieAway
Week of 3/15100.0*Chance in playoffs100.0*Average seed
Seattle vs LA+7.8*+0.3-4.9
+0.3+0.0-0.2
DC vs Dallas+1.1*+0.5-1.6
+0.0-0.0-0.1
New York vs Houston+0.2*-0.2-0.1
Tampa Bay vs St Louis+0.1*-0.4-0.1

* 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 Seattle finish out the regular season.   Explain

100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs1234Count
65-0-099.2%4951146,794
5.54-0-194.21936881
54-1-075.10752501,377,216
3-0-2In1001
4.53-1-148.2484846,519
43-2-017.11762215,417,071
2-1-227.327452711
3.52-2-13.13465119,185
32-3-0Out227810,424,913
1-2-2Out168419
2.51-3-1Out49624,183
21-4-0Out01009,797,689
0-3-2Out10025
1-1.5Out1003,628,901*
Total:6.8%07197430,843,408

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs