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Statistika (za biologe, 2.dio) - Pmf

Statistika (za biologe, 2.dio) - Pmf

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Mat. očekivanje <strong>za</strong> X binomnu sl. varijablu s parametrima n i p je<br />

n�<br />

� �<br />

n<br />

EX = k p<br />

k<br />

k q n−k = np.<br />

A varijanca je<br />

Pa je st. devijacija<br />

k=0<br />

varX = npq .<br />

σX = √ npq .

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