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(
100.0%
42.3%
23.1%
80.0%
50.0% ) = 0.591
SOS2 represents the average of opponents' SOS1.
AVERAGE(
0.513
0.405
0.478
0.511
0.490 ) = 0.479
RPI represents the Ratings Percentage Index
( 40% × Win% ) + ( 40% × SOS1 ) + ( 20% × SOS2 ) = RPI
( 40% × 0.200 ) + ( 40% × 0.591 + ( 20% × 0.479 ) = 0.412
( 0.080 ) + ( 0.236 ) + ( 0.096 ) = 0.412