The rule of stepped weighting summation: 1/2 P 1/2 1/2 1/3 2p=1/3 l/22/3X2 1/6 P=1/6 1/3 3 H(u2,13,16)=Hs(1/2,12)+12H(2/3,13)The rule of stepped weighting summation: 1/2 1/3 1/6 x x x 1 2 3 1/2 1/2 2/3 1/3 x x x 1 2 3 p = 1/2 p = 1/3 p = 1/6 1 2 3 H (1/2, 1/3, 1/6) = H (1/2, 1/2) + 1/2 H (2/3, 1/3) S S S