Win% represents the percent games played that were won.
Games Won + ( Games Tied × 0.5 ) ) ÷ Games Played = Win%
( 2 + ( 0 × 0.5 ) ) ÷ 8 = 25.0%
SOS1 represents the average of opponents' Win% for each game.
AVERAGE(
0.0%
57.1%
63.6%
25.0%
80.0%
57.1%
33.3%
9.1% ) = 0.428
SOS2 represents the average of opponents' SOS1.
AVERAGE(
0.464
0.494
0.385
0.530
0.365
0.441
0.377
0.510 ) = 0.448
RPI represents the Ratings Percentage Index
( 40% × Win% ) + ( 40% × SOS1 ) + ( 20% × SOS2 ) = RPI
( 40% × 0.250 ) + ( 40% × 0.428 + ( 20% × 0.448 ) = 0.341
( 0.100 ) + ( 0.171 ) + ( 0.090 ) = 0.341