How are these numbers calculated?

Big Games

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

Week of 3/31100.0*Chance in playoffs100.0*Average seed
San Antonio 7 Arizona 15 -3.6
-0.3
If winner is:HomeTieAway
Week of 4/7100.0*Chance in playoffs100.0*Average seed
San Antonio vs MemphisInIn-19.9
+0.1+0.1-0.4
Atlanta vs Salt Lake+6.6+6.6-1.7
+0.1+0.1-0.0
Orlando vs San Diego+0.3+0.3-1.4
Arizona vs Birmingham-0.2-0.3+0.3
-0.1+0.1+0.2

What If

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

100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs1234Count
72-0-0In76241,633,816,696
6.51-0-1In68322,161,743
61-1-0In32682,132,296,574
0-0-2In4357694
5.50-1-1In19811,304,965
50-2-043.7%241534567,858,208
Total:92.6%4448704,337,438,880
Games Above .500
Chance Will Make Playoffs