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Slika - Shrani.si

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A. Juriˇ<strong>si</strong>ć in V. Batagelj: Verjetnostni račun in statistika 186<br />

✬<br />

Naj bo<br />

✫<br />

Slučajni vektorji – primer<br />

A(x, y) = {(u, v) ∈ R 2 : u < x ∧ v < y}<br />

(levi spodnji kvadrant glede na (x, y)).<br />

Naj porazdelitvena funkcija opisuje verjetnost, da je slučajna točka (X, Y )<br />

v mnoˇzici A(x, y)<br />

F (x, y) = P (X < x, Y < y) = P ((X, Y ) ∈ A(x, y)).<br />

Tedaj je verjetnost, da je slučajna točka (X, Y ) v pravokotniku [a, b)×[c, d)<br />

enaka<br />

P ((X, Y ) ∈ [a, b) × [c, d)) = F (b, d) − F (a, d) − F (b, c) + F (a, c)<br />

Univerza v Ljubljani ▲<br />

❙ ▲<br />

▲<br />

▲<br />

● ❙ ▲<br />

▲<br />

☛ ✖<br />

✩<br />

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