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(
16.7%
32.1%
62.5%
50.0%
64.3%
50.0% ) = 0.439
SOS2 represents the average of opponents' SOS1.
AVERAGE(
0.378
0.370
0.478
0.548
0.486
0.615 ) = 0.428
RPI represents the Ratings Percentage Index
( 40% × Win% ) + ( 40% × SOS1 ) + ( 20% × SOS2 ) = RPI
( 40% × 0.250 ) + ( 40% × 0.439 + ( 20% × 0.428 ) = 0.361
( 0.100 ) + ( 0.176 ) + ( 0.086 ) = 0.361