Win% represents the percent games played that were won.
Games Won + ( Games Tied × 0.5 ) ) ÷ Games Played = Win%
( 8 + ( 0 × 0.5 ) ) ÷ 9 = 88.9%
SOS1 represents the average of opponents' Win% for each game.
AVERAGE(
) = 0.648
SOS2 represents the average of opponents' SOS1.
AVERAGE(
) = 0.547
RPI represents the Ratings Percentage Index
( 40% × Win% ) + ( 40% × SOS1 ) + ( 20% × SOS2 ) = RPI
( 40% × 0.889 ) + ( 40% × 0.648 + ( 20% × 0.547 ) = 0.724
( 0.356 ) + ( 0.259 ) + ( 0.109 ) = 0.724