Win% represents the percent games played that were won.
Games Won + ( Games Tied × 0.5 ) ) ÷ Games Played = Win%
( 1 + ( 0 × 0.5 ) ) ÷ 8 = 12.5%
SOS1 represents the average of opponents' Win% for each game.
AVERAGE(
72.7%
63.6%
53.8%
60.7%
16.7%
33.3%
71.4%
57.1% ) = 0.537
SOS2 represents the average of opponents' SOS1.
AVERAGE(
0.505
0.444
0.477
0.442
0.338
0.376
0.467
0.419 ) = 0.434
RPI represents the Ratings Percentage Index
( 40% × Win% ) + ( 40% × SOS1 ) + ( 20% × SOS2 ) = RPI
( 40% × 0.125 ) + ( 40% × 0.537 + ( 20% × 0.434 ) = 0.352
( 0.050 ) + ( 0.215 ) + ( 0.087 ) = 0.352