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(
50.0%
0.0%
90.0%
50.0%
33.3%
50.0% ) = 0.547
SOS2 represents the average of opponents' SOS1.
AVERAGE(
0.350
0.721
0.340
0.400
0.567
0.539 ) = 0.439
RPI represents the Ratings Percentage Index
( 40% × Win% ) + ( 40% × SOS1 ) + ( 20% × SOS2 ) = RPI
( 40% × 0.200 ) + ( 40% × 0.547 + ( 20% × 0.439 ) = 0.387
( 0.080 ) + ( 0.219 ) + ( 0.088 ) = 0.387