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Slika - Shrani.si

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A. Juriˇ<strong>si</strong>ć in V. Batagelj: Verjetnostni račun in statistika 633<br />

✬<br />

Obe regre<strong>si</strong>jski premici lahko vriˇsemo v razsevni grafikon in preverimo, če<br />

se res najbolje prilegata točkam v grafikonu:<br />

Regre<strong>si</strong>jski premici se sečeta v točki, določeni z aritmetičnima sredinama<br />

spremenljivk X in Y .<br />

Dokaˇzite, da se premici vedno sečeta v tej točki.<br />

✫<br />

Univerza v Ljubljani ▲<br />

❙ ▲<br />

▲<br />

● ❙ ▲<br />

▲<br />

☛ ✖<br />

▲<br />

✩<br />

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