Win% represents the percent games played that were won.
Games Won + ( Games Tied × 0.5 ) ) ÷ Games Played = Win%
( 5 + ( 0 × 0.5 ) ) ÷ 8 = 62.5%
SOS1 represents the average of opponents' Win% for each game.
AVERAGE(
85.7%
65.0%
28.6%
62.5%
55.6%
66.7%
40.0%
40.0% ) = 0.555
SOS2 represents the average of opponents' SOS1.
AVERAGE(
0.660
0.598
0.464
0.481
0.422
0.645
0.607
0.484 ) = 0.545
RPI represents the Ratings Percentage Index
( 40% × Win% ) + ( 40% × SOS1 ) + ( 20% × SOS2 ) = RPI
( 40% × 0.625 ) + ( 40% × 0.555 + ( 20% × 0.545 ) = 0.581
( 0.250 ) + ( 0.222 ) + ( 0.109 ) = 0.581