Statistika (za biologe, 2.dio) - Pmf
Statistika (za biologe, 2.dio) - Pmf
Statistika (za biologe, 2.dio) - Pmf
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Za sl. varijable X i Y definiramo kovarijancu od X i Y kao<br />
Lako se vidi da vrijedi<br />
cov(X, Y ) = E[(X − EX)(Y − EY )].<br />
cov(X, Y ) = E(XY ) − EXEY.<br />
Posebno je <strong>za</strong> ne<strong>za</strong>visne sl. varijable X i Y cov(X, Y ) = 0.