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f(x,y)=3(x+y)+32xy f(x,y)=3(x+y)-32xy f(x,y)=3(x+y)-16xy f(x,y)=3(x+y)+16xy
X1 X2 (X1,X2) (X1,X2,X3,X4)
f(x,y)=3(x+y)+32xy f(x,y)=3(x+y)-32xy f(x,y)=3(x+y)-16xy f(x,y)=3(x+y)+16xy
x1=10,x2=2 x1=12,x2=10 x1=12,x2=2 x1=2,x2=2
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f(x,y)=3(x+y)+32xy f(x,y)=3(x+y)-32xy f(x,y)=3(x+y)-16xy f(x,y)=3(x+y)+16xy
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f(x,y)=3(x+y)+32xy f(x,y)=3(x+y)-32xy f(x,y)=3(x+y)-16xy f(x,y)=3(x+y)+16xy
12xy-4x 12xy-10x 12xy-8x 12xy-2x
X2+2Y2 2XY2 2X2+Y2 2X2Y 3X2+Y2 2X3Y X2+3Y2 2XY3
四格表的x2值为5 四格表的较正值x2为4.5 用x2=(|b-c|-1)/(b+c)计算x2值 用x2=(b-c/b+c)计算x2值 用x2=计算x2值
f(x,y)=3(x+y)+32xy f(x,y)=3(x+y)-32xy f(x,y)=3(x+y)-16xy f(x,y)=3(x+y)+16xy
x1=10,x2=2 x1=12,x2=10 x1=12,x2=2 x1=2,x2=2
(年龄x2)+80 (年龄x2)+75 (年龄x2)+85 年龄x5)+85 以上都不是
X2+2Y2==2XY2 2X2+Y2==2X2Y 3X2+Y2==2X3Y X2+3Y2==2XY3
X1 X2 (Xl,X2) (Xl,X2,X3,X4)