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Slika - Shrani.si

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A. Juriˇ<strong>si</strong>ć in V. Batagelj: Verjetnostni račun in statistika 59<br />

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Standardizacija<br />

Vsaki vrednosti xi spremenljivke X odˇstejemo njeno povprečje<br />

µ in delimo z njenim standardnim odklonom σ:<br />

zi = xi − µ<br />

.<br />

σ<br />

Za novo spremenljivko Z bomo rekli, da je standardizirana,<br />

zi pa je standardizirana vrednost.<br />

Potem je µ(Z) = 0 in σ(Z) = 1.<br />

Univerza v Ljubljani ▲<br />

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