Win% represents the percent games played that were won.
Games Won + ( Games Tied × 0.5 ) ) ÷ Games Played = Win%
( 1 + ( 0 × 0.5 ) ) ÷ 5 = 20.0%
SOS1 represents the average of opponents' Win% for each game.
AVERAGE(
33.3%
55.6%
50.0%
63.6%
70.0% ) = 0.488
SOS2 represents the average of opponents' SOS1.
AVERAGE(
0.377
0.592
0.397
0.385
0.445 ) = 0.438
RPI represents the Ratings Percentage Index
( 40% × Win% ) + ( 40% × SOS1 ) + ( 20% × SOS2 ) = RPI
( 40% × 0.200 ) + ( 40% × 0.488 + ( 20% × 0.438 ) = 0.383
( 0.080 ) + ( 0.195 ) + ( 0.088 ) = 0.383