1

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. . -21 ..

. . ..

2006

: , .

.

1. PSIXTEST : , . .2. .

3. .

4. .

.

,

Y .

01234567910

0,060,130,150,130,120,150,150,060,0250,025

M[X]=x*p=3.845

M[X2]=x2*p= 20.435D[X]= M[X2]- M2[X] =16.59 [X]=4.07Y012345678

0,040,210,130,210,230,080,020,040,04

M[Y]=y*p=3.14

M[Y2]=y2*p= 13.54

D[Y]= M[Y2]- M2[Y] =10.4 [Y]=3.22

xy= D[X]* D[Y]=13.14

xy= xy/ [X]* [Y]=1

: , 0, X Y , .. . , . , .