Win% represents the percent games played that were won.
Games Won + ( Games Tied × 0.5 ) ) ÷ Games Played = Win%
( 3 + ( 1 × 0.5 ) ) ÷ 13 = 26.9%
SOS1 represents the average of opponents' Win% for each game.
AVERAGE(
) = 0.403
SOS2 represents the average of opponents' SOS1.
AVERAGE(
) = 0.457
RPI represents the Ratings Percentage Index
( 40% × Win% ) + ( 40% × SOS1 ) + ( 20% × SOS2 ) = RPI
( 40% × 0.269 ) + ( 40% × 0.403 + ( 20% × 0.457 ) = 0.360
( 0.108 ) + ( 0.161 ) + ( 0.091 ) = 0.360