How are these numbers calculated?

Big Games

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

Week of 9/19100.0*Average seed
Charleston 2 Miami 0 -0.1
If winner is:HomeDrawAway
Week of 9/26100.0*Average seed
Miami vs Tampa Bay-0.2-0.0+0.1
Miami vs Charleston+0.2+0.1-0.1

What If

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

100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-Lplayoffs12345Count
362-0-0In100478,531,144
341-1-0In8911437,037,744
331-0-1In4060372,210,061
320-2-0In475399,025,254
310-1-1In1189165,184,494
300-0-2In19965,235,423
Total:In67331,617,224,120
Points
Chance Will Make Playoffs