How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Sunday100.0*Average seed
Celtics 104 Nets 116 -0.1
Bulls 124 Hawks 99 +0.1
Knicks 101 Celtics 83 -0.1
Suns 120 Hawks 100 +0.1
Trailblazers 107 Hawks 109 -0.0
Heat 115 Hawks 117 -0.0
Celtics 122 Spurs 86 +0.0
If winner is:HomeAway
Tuesday100.0*Average seed
Hawks vs Clippers-0.0+0.1
Hawks vs Wizards-0.0+0.1
Hawks vs Bucks-0.0+0.1
Celtics vs 76ers+0.0-0.1
Magic vs Hawks+0.1-0.0
Celtics vs Nuggets+0.0-0.1
Spurs vs Celtics-0.1+0.0
Celtics vs Raptors+0.0-0.1

What If

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

100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112131415Count
5711-0In82182,291
5610-1In564413,017
559-2In297131,967
548-3In118945,535
537-4In39742,721
526-5In199027,336
515-6In097312,248
504-7In087133,817
493-8In6832809
482-9In4357114
471-10In63388
460-11In792114
Total:In148610179,877
Games Above .500
Chance Will Make Playoffs