Win% represents the percent games played that were won.
Games Won + ( Games Tied × 0.5 ) ) ÷ Games Played = Win%
( 1 + ( 0 × 0.5 ) ) ÷ 5 = 20.0%
SOS1 represents the average of opponents' Win% for each game.
AVERAGE(
0.0%
50.0%
37.5%
64.3%
50.0% ) = 0.399
SOS2 represents the average of opponents' SOS1.
AVERAGE(
0.520
0.484
0.443
0.508
0.556 ) = 0.489
RPI represents the Ratings Percentage Index
( 40% × Win% ) + ( 40% × SOS1 ) + ( 20% × SOS2 ) = RPI
( 40% × 0.200 ) + ( 40% × 0.399 + ( 20% × 0.489 ) = 0.357
( 0.080 ) + ( 0.160 ) + ( 0.098 ) = 0.357