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Slika - Shrani.si

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A. Juriˇ<strong>si</strong>ć in V. Batagelj: Verjetnostni račun in statistika 327<br />

✬<br />

✫<br />

. . . Vzorčna disperzija<br />

Če je n zelo velik, je po centralnem limitnem izreku statistika χ 2<br />

porazdeljena pribliˇzno normalno in <strong>si</strong>cer po zakonu<br />

vzorčna disperzija S 2 0 pribliˇzno po<br />

N n − 1, 2(n − 1) ,<br />

2 (n − 1)σ<br />

N<br />

,<br />

n<br />

2 2(n − 1) σ<br />

in popravljena vzorčna disperzija S 2 pribliˇzno po<br />

N<br />

<br />

σ 2 ,<br />

n<br />

2<br />

n − 1 σ2<br />

Univerza v Ljubljani ▲<br />

❙ ▲<br />

▲<br />

<br />

.<br />

▲<br />

● ❙ ▲<br />

▲<br />

☛ ✖<br />

✩<br />

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