Statistika (za biologe, 2.dio) - Pmf
Statistika (za biologe, 2.dio) - Pmf
Statistika (za biologe, 2.dio) - Pmf
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Iz <strong>za</strong>jedničke razdiobe kovarijancu računamo po formuli<br />
cov(X, Y ) = � �<br />
(ai − EX)(bj − EY )P (X = ai, Y = bj) .<br />
Nadalje vrijedi<br />
i<br />
j<br />
var(X + Y ) = varX + varY + 2cov(X, Y ).