How are these numbers calculated?

Big Games

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

If winner is:HomeAway
Week of 10/14100.0*Chance in playoffs100.0*Average seed
Calgary vs Washington-7.6+7.6
-0.6+0.6
San Jose vs Tampa Bay+0.9-0.9
+0.1-0.1
Buffalo vs Quebec City-0.9+0.9
-0.1+0.1
Arizona vs Pittsburgh+0.9-0.9
+0.1-0.1
Detroit vs Colorado-0.9+0.9
-0.1+0.1
Vegas vs Montreal+0.8-0.8
+0.1-0.1
Columbus vs St. Louis-0.8+0.8
-0.1+0.1
Boston vs Philadelphia+0.2-0.2
If winner is:HomeAway
Week of 10/21100.0*Chance in playoffs100.0*Average seed
Washington vs Chicago+7.6-7.6
+0.6-0.6
Pittsburgh vs Florida-1.4+0.4
-0.1+0.0
Philadelphia vs Los Angeles-0.9+0.9
-0.1+0.1
Tampa Bay vs Arizona-0.9+0.9
-0.1+0.1
St. Louis vs Boston+0.8-0.8
+0.1-0.1
Colorado vs Columbus+0.8-0.8
+0.1-0.1
Montreal vs Vancouver-0.8+0.8
-0.1+0.1
New Jersey vs New York I+0.5-0.2
+0.1-0.0
Ottawa vs Toronto-0.4+0.1
Buffalo vs Detroit-0.2+0.2

What If

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

100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-Lplayoffs12345678910111213141516Count
36-38In100198*
3417-2In973186
3216-3In692741,322
3015-4In1038419206,661
2814-5In115443080024,788
2613-6100.0%00105032710069,654
2412-799.700194029102000153,488
2211-894.8041831281441000270,305
2010-964.200210232922103000380,745
189-1020.8001514252718710430,610
168-112.00000161628291530394,056
147-120.5000021128382000288,150
126-130.400016295580168,531
105-140.4000054144877,117
84-150.510017542827,023
63-160.40019816,891
42-170.505951,263
21-18Out199153
00-191.6298187
Total:37.2%0014689910101010109312,301,328

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs