How are these numbers calculated?

Big Games

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

Week of 3/21100.0*Chance in playoffs100.0*Average seed
Ariel 27 Dave 31 +16.0
+0.6
Steve 14 ME 49 -3.9
-0.1
Katz 45 Euge 14 -2.6
-0.1
Eli 22 Ant 39 +1.0
+0.0
If winner is:HomeTieAway
Week of 3/27100.0*Chance in playoffs100.0*Average seed
Katz vs Dave-28.3-11.5+24.8
-0.8-0.2+0.7
Eli vs ME+8.2-4.0-7.0
+0.1-0.2-0.1
Ariel vs Ant+6.0-0.3-3.9
+0.2-0.0-0.1
Steve vs Euge-1.4+3.6+0.5
+0.1+0.2-0.0

What If

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

100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-L-Tplayoffs12345678Count
323-0-0In4739143,214,715
312-0-196.8%1244413193,413
302-1-082.5223571708,728,639
1-0-291.74305883,865
291-1-136.102345770345,845
0-0-324.261870633
281-2-024.90124512227,748,158
0-1-222.7022571913,470
270-2-10.101253341153,045
260-3-0Out7434282,254,842
Total:55.9%8153326125122,646,025
Games Above .500
Chance Will Make Playoffs