Win% represents the percent games played that were won.
Games Won + ( Games Tied × 0.5 ) ) ÷ Games Played = Win%
( 11 + ( 0 × 0.5 ) ) ÷ 15 = 73.3%
SOS1 represents the average of opponents' Win% for each game.
AVERAGE(
) = 0.639
SOS2 represents the average of opponents' SOS1.
AVERAGE(
) = 0.573
RPI represents the Ratings Percentage Index
( 40% × Win% ) + ( 40% × SOS1 ) + ( 20% × SOS2 ) = RPI
( 40% × 0.733 ) + ( 40% × 0.639 + ( 20% × 0.573 ) = 0.663
( 0.293 ) + ( 0.256 ) + ( 0.115 ) = 0.663