How are these numbers calculated?

Big Games

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

Sunday, 2/23100.0*Average seed
EHCV 2 HCT 1 (ot)+0.5
Wednesday, 2/26100.0*Average seed
HCT 1 EHCV 4 +1.6
HCC 3 HCA 9 -0.1
Friday, 2/28100.0*Average seed
EHCV 3 HCT 2 (ot)+0.5
EHCK 3 GCK 2 -0.3
HCA 7 HCC 3 -0.3
EHCO 1 SCL 4 -0.1
Points
Chance Will Make Playoffs