Win% represents the percent games played that were won.
Games Won + ( Games Tied × 0.5 ) ) ÷ Games Played = Win%
( 3 + ( 0 × 0.5 ) ) ÷ 9 = 33.3%
SOS1 represents the average of opponents' Win% for each game.
AVERAGE(
33.3%
100.0%
42.3%
14.3%
33.3%
57.1%
33.3%
28.6%
53.3% ) = 0.439
SOS2 represents the average of opponents' SOS1.
AVERAGE(
0.442
0.238
0.424
0.627
0.462
0.289
0.584
0.684
0.520 ) = 0.474
RPI represents the Ratings Percentage Index
( 40% × Win% ) + ( 40% × SOS1 ) + ( 20% × SOS2 ) = RPI
( 40% × 0.333 ) + ( 40% × 0.439 + ( 20% × 0.474 ) = 0.404
( 0.133 ) + ( 0.176 ) + ( 0.095 ) = 0.404