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%LAB8
x=[20*ones(1,2),21*ones(1,1),22*ones(1,3),23*ones(1,6),24*ones(1,5),25*ones(1,9),26*ones(1,2),26*ones(1,2)]
y=[75*ones(1,3),76*ones(1,2),77*ones(1,2),78*ones(1,5),79*ones(1,8),80*ones(1,8),81*ones(1,1),82*ones(1,1)]

%PUNCTU a) - media aritm
mx=mean(x);
my=mean(y);

fprintf('Arithmetical mean for X: %0.2f\n', mx);
fprintf('Arithmetical mean for Y: %0.2f\n', my);

%variance
x1=var(x,1);
y1=var(y,1);

fprintf('Variance X: %0.02f\n',x1);
fprintf('Variance Y: %0.02f\n',y1);