F tabel pdf. The f distribution is a right skewed distribution used most commonly in analysis of variance. The second table gives the f values for 005 of the area in the right tail and the third table gives f values for the 001 level of. Table entries are critical values for f with probably p in right tail of the distribution.
Figure of f distribution like in moore 2004 p. Go along x columns and down y rows. When referencing the f distribution the numerator degrees of freedom are always given first as switching the order of degrees of freedom changes the distribution eg f 1012 does not equal f 1210for the four f tables below the rows represent denominator degrees of.
F probability p table e f critical values degrees of freedom in the numerator p 123456789100 3986 4950 5359 5583 5724 5820 5891 5944 5986. This has xy degrees of freedom associated with it. The three tables which follow are organized by the level of signicance.
The point of intersection is your critical f ratio. P 12345678 12 241000. The second table gives critical values of f at the p 001 level of significance.
T 12 tables table entry for p is the critical value f with probability p lying to its right.