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5. Test per proporzioni: confronto tra campioni e ... - statistica.it

5. Test per proporzioni: confronto tra campioni e ... - statistica.it

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6. TEST PER PROPORZIONI<br />

6. Calcolare le frequenze attese π i O<br />

x a -| x b20<br />

59.5-|62.5<br />

62.5-|6<strong>5.</strong>5<br />

6<strong>5.</strong>5-|68.5<br />

68.5-|71.5<br />

71.5-|74.5<br />

(x a +x b )/2<br />

61<br />

64<br />

67<br />

70<br />

73<br />

O i<br />

5<br />

18<br />

42<br />

27<br />

8<br />

z<br />

-1.69<br />

-0.66<br />

0.36<br />

1.38<br />

oo<br />

0.0455<br />

0.2546<br />

0.6406<br />

0.9126<br />

1.0000<br />

0.0455<br />

0.2091<br />

0.3860<br />

0.2756<br />

0.0838<br />

MARTA BLANGIARDO – TEST PER PROPORZION - 6.67<br />

F i<br />

π i<br />

π i O<br />

4.55<br />

20.91<br />

38.60<br />

27.56<br />

8.38

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