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(
66.7%
37.5%
0.0%
77.8%
75.0% ) = 0.643
SOS2 represents the average of opponents' SOS1.
AVERAGE(
0.645
0.442
0.000
0.489
0.560 ) = 0.534
RPI represents the Ratings Percentage Index
( 40% × Win% ) + ( 40% × SOS1 ) + ( 20% × SOS2 ) = RPI
( 40% × 0.250 ) + ( 40% × 0.643 + ( 20% × 0.534 ) = 0.464
( 0.100 ) + ( 0.257 ) + ( 0.107 ) = 0.464