Win% represents the percent games played that were won.
Games Won + ( Games Tied × 0.5 ) ) ÷ Games Played = Win%
( 1 + ( 0 × 0.5 ) ) ÷ 4 = 25.0%
SOS1 represents the average of opponents' Win% for each game.
AVERAGE(
40.0%
50.0%
60.0%
80.0% ) = 0.575
SOS2 represents the average of opponents' SOS1.
AVERAGE(
0.663
0.287
0.397
0.250 ) = 0.399
RPI represents the Ratings Percentage Index
( 40% × Win% ) + ( 40% × SOS1 ) + ( 20% × SOS2 ) = RPI
( 40% × 0.250 ) + ( 40% × 0.575 + ( 20% × 0.399 ) = 0.410
( 0.100 ) + ( 0.230 ) + ( 0.080 ) = 0.410