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Slika - Shrani.si

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A. Juriˇ<strong>si</strong>ć in V. Batagelj: Verjetnostni račun in statistika 545<br />

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Analiza variance v R-ju<br />

Zgled: Petnajst enako velikih njiv je bilo posejanih z isto vrsto pˇsenice,<br />

vendar gnojeno na tri različne načine – z vsakim po pet njiv.<br />

> ena dva tri d names(d)<br />

[1] "values" "ind"<br />

> oneway.test(values ˜ ind, data=d, var.equal=TRUE)<br />

One-way analy<strong>si</strong>s of means<br />

data: values and ind<br />

F = 10.5092, num df = 2, denom df = 12, p-value = 0.002304<br />

> av summary(av) Df Sum Sq Mean Sq F value Pr(>F)<br />

ind 2 1628.93 814.47 10.509 0.002304 **<br />

Re<strong>si</strong>duals 12 930.00 77.50<br />

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Signif. codes: 0 ’***’ 0.001 ’**’ 0.01 ’*’ 0.05 ’.’ 0.1 ’ ’ 1<br />

Domnevo H0 zavrnemo.<br />

Univerza v Ljubljani ▲<br />

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● ❙ ▲<br />

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☛ ✖<br />

▲<br />

✩<br />

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