If the expected frequencies E are large enough in every cell then under H0, 2*summation[Olog(O/E)]~summation[(O-E)^2/E] Hint: Consider a second-order expension of logx around 1 logx~(x-1)-1/2(x-1)^2 Under H0 we expect O/E~1,so we apply the second order expansion on logO/E and finish the algebra. Could anyone help me complete the details? Thanks a lot. --

※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 24.131.82.51