x/y ___0 _____ 1 ______2_______ сумма

1 ____0,2 ____ 0,1 ____0,15_____ 0.45

2 ____0,15 ___0,25 ____0,15_____ 0.55

сумма__0.35___ 0.35____ 0.3

r(X,Y)=[M(X*Y)-M(X)*M(Y)]/[sigma(X)*sigma(Y)]

M(X)=0*0.35+1*0.35+2*0.3=...
M(Y)=1*0.45+2*0.55=....
M(X*Y)=(0*1*0.2+0*2*0.15)+(1*1*0.1+1*2*0.25)+(2*1*0.15+2*2*0.15)=...
M(X^2)=(0^2)*0.35+(1^2)*0.35+(2^2)*0.3=...
D(X)=M(X^2) - [M(X)]^2=...
sigma(X)=sqrt(D(X)=...
Точно также находится sigma(Y).