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Estadística Básica para Estudiantes de Ciencias Febrero 2009<br />

Tabla VII<br />

DISTRIBUCIÓN F DE FISHER<br />

Abcisas F α;n1,n 2<br />

que dejan a su derecha un área α bajo la función con n 1 y n 2 grados de libertad.<br />

1<br />

Para valores de α próximos a uno se puede utilizar la relación F 1−α;n2,n 1<br />

= .<br />

F α;n1,n 2<br />

α =0.10<br />

n 1<br />

n 2 1 2 3 4 5 6 7 8 9 10 12 15 20 24 30 40 60 120 ∞<br />

1 39.863 49.500 53.593 55.833 57.240 58.204 58.906 59.438 59.857 60.195 60.705 61.222 61.741 62.002 62.265 62.529 62.794 63.061 63.325<br />

2 8.5263 9.0000 9.1618 9.2434 9.2926 9.3255 9.3491 9.3667 9.3806 9.3916 9.4082 9.4248 9.4414 9.4500 9.4579 9.4662 9.4746 9.4829 9.4912<br />

3 5.5383 5.4624 5.3908 5.3426 5.3092 5.2847 5.2662 5.2517 5.2400 5.2304 5.2156 5.2003 5.1845 5.1762 5.1681 5.1598 5.1512 5.1425 5.1337<br />

4 4.5448 4.3246 4.1909 4.1072 4.0506 4.0097 3.9790 3.9549 3.9357 3.9199 3.8955 3.8703 3.8443 3.8310 3.8174 3.8037 3.7896 3.7753 3.7607<br />

5 4.0604 3.7797 3.6195 3.5202 3.4530 3.4045 3.3679 3.3393 3.3163 3.2974 3.2682 3.2380 3.2067 3.1905 3.1741 3.1572 3.1402 3.1228 3.1050<br />

6 3.7760 3.4633 3.2888 3.1809 3.1075 3.0546 3.0145 2.9830 2.9577 2.9369 2.9047 2.8712 2.8363 2.8183 2.8000 2.7812 2.7620 2.7423 2.7222<br />

7 3.5894 3.2574 3.0740 2.9605 2.8833 2.8273 2.7849 2.7516 2.7247 2.7025 2.6681 2.6322 2.5947 2.5753 2.5555 2.5351 2.5142 2.4928 2.4708<br />

8 3.4579 3.1131 2.9238 2.8064 2.7265 2.6683 2.6241 2.5893 2.5612 2.5380 2.5020 2.4642 2.4246 2.4041 2.3830 2.3614 2.3391 2.3162 2.2926<br />

9 3.3604 3.0065 2.8129 2.6927 2.6106 2.5509 2.5053 2.4694 2.4403 2.4163 2.3789 2.3396 2.2983 2.2768 2.2547 2.2320 2.2085 2.1843 2.1592<br />

10 3.2850 2.9245 2.7277 2.6053 2.5216 2.4606 2.4141 2.3772 2.3473 2.3226 2.2840 2.2435 2.2007 2.1784 2.1554 2.1317 2.1072 2.0818 2.0554<br />

12 3.1765 2.8068 2.6055 2.4801 2.3940 2.3310 2.2828 2.2446 2.2135 2.1878 2.1474 2.1049 2.0597 2.0360 2.0115 1.9861 1.9597 1.9323 1.9036<br />

15 3.0732 2.6952 2.4898 2.3614 2.2730 2.2081 2.1582 2.1185 2.0862 2.0593 2.0171 1.9722 1.9243 1.8990 1.8728 1.8454 1.8168 1.7867 1.7551<br />

20 2.9747 2.5893 2.3801 2.2489 2.1582 2.0913 2.0397 1.9985 1.9649 1.9367 1.8924 1.8449 1.7938 1.7667 1.7382 1.7083 1.6768 1.6432 1.6074<br />

24 2.9271 2.5383 2.3274 2.1949 2.1030 2.0351 1.9826 1.9407 1.9063 1.8775 1.8319 1.7831 1.7302 1.7019 1.6721 1.6407 1.6073 1.5715 1.5327<br />

30 2.8807 2.4887 2.2761 2.1422 2.0492 1.9803 1.9269 1.8841 1.8490 1.8195 1.7727 1.7223 1.6673 1.6377 1.6065 1.5732 1.5376 1.4989 1.4564<br />

40 2.8354 2.4404 2.2261 2.0909 1.9968 1.9269 1.8725 1.8289 1.7929 1.7627 1.7146 1.6624 1.6052 1.5741 1.5411 1.5056 1.4672 1.4248 1.3769<br />

60 2.7911 2.3932 2.1774 2.0410 1.9457 1.8747 1.8194 1.7748 1.7380 1.7070 1.6574 1.6034 1.5435 1.5107 1.4755 1.4373 1.3952 1.3476 1.2915<br />

120 2.7478 2.3473 2.1300 1.9923 1.8959 1.8238 1.7675 1.7220 1.6842 1.6524 1.6012 1.5450 1.4821 1.4472 1.4094 1.3676 1.3203 1.2646 1.1926<br />

∞ 2.7055 2.3026 2.0838 1.9448 1.8473 1.7741 1.7167 1.6702 1.6315 1.5987 1.5458 1.4871 1.4206 1.3832 1.3419 1.2951 1.2400 1.1686 1.1000<br />

A–25

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