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
Chicago vs Dallas-9.4+9.4
-1.0+1.0
Buffalo vs Quebec City+0.6-0.6
+0.1-0.1
Vegas vs Montreal-0.6+0.6
-0.1+0.1
Columbus vs St. Louis+0.5-0.5
+0.1-0.1
Arizona vs Pittsburgh-0.5+0.5
-0.1+0.1
Detroit vs Colorado+0.5-0.5
+0.1-0.1
San Jose vs Tampa Bay-0.5+0.5
Calgary vs Washington-0.5+0.5
If winner is:HomeAway
Week of 10/21100.0*Chance in playoffs100.0*Average seed
Dallas vs New York R+7.4-7.4
+0.8-0.8
Washington vs Chicago+0.6-0.6
+0.1-0.1
St. Louis vs Boston-0.6+0.6
-0.1+0.1
Tampa Bay vs Arizona+0.6-0.6
+0.1-0.1
Montreal vs Vancouver+0.5-0.5
Philadelphia vs Los Angeles+0.5-0.5
+0.1-0.1
Colorado vs Columbus-0.5+0.5
-0.1+0.1

What If

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

100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-Lplayoffs12345678910111213141516Count
34-38In100380*
3216-3In9821,493
3015-4In937006,082
2814-5In7721201018,629
2613-6In463811051042,893
2412-7100.0%143026319610080,023
2211-898.31718724221351000120,363
2010-975.60038715212114721000146,636
189-1027.400802512192217104100147,555
168-118.3070001391824221240119,802
147-127.5800039213022680,187
126-137.68001416383443,461
105-147.68002207018,468
84-157.3706866,234
63-167.571911,522
42-176.3694272
21-1810.0109030
00-191.529866
Total:52.8%6667777776666655834,096

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs