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A. Juriˇ<strong>si</strong>ć in V. Batagelj: Verjetnostni račun in statistika 585<br />

✬<br />

Statistika χ 2 je lahko le pozitivna. Zavzame lahko vrednosti v intervalu<br />

[0, χ 2 max], kjer je χ 2 max = n(k − 1), če je k = min(v, s).<br />

χ 2 statistika v sploˇsnem ni primerljiva. Zato je definiranih več kontingenčnih<br />

koeficientov, ki so bolj ali manj primerni. Omenimo naslednje:<br />

1. Pearsonov koeficient:<br />

ki ima zgornjo mejo Φ 2 max = k − 1.<br />

✫<br />

Φ = χ2<br />

n ,<br />

Univerza v Ljubljani ▲<br />

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