How are these numbers calculated?

Big Games

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

Week of 2/25100.0*Chance in playoffs100.0*Wooden Spoon100.0*Average seed
England 36 Italy 15 -15.6
+18.6
-0.5
Scotland 29 Wales 13 -1.0
+0.5
-0.0
Ireland 19 France 9 +0.6
-1.0
+0.0
If winner is:HomeDrawAway
Week of 3/10100.0*Chance in playoffs100.0*Wooden Spoon100.0*Average seed
Wales vs IrelandOutOut+0.3
+6.5-4.9-6.3
-0.1+0.0+0.1

What If

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

100100100100100100
If finish:Chance inChance will finish regular season at seedWooden
TPW-D-Lplayoffs123456SpoonCount
82-0-01.4%1752423.6%211,661,658
61-1-0Out485252.024,336,011
0-4Out100Yes659,316,623*
Total:0.3%0198180.6%895,314,292

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs