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# Quick help with F distribution

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1. We only get the upper % points table for the F distribution.

so to work out F(10,14,0.975) I used the tables and got 3.147, but how do I get F(10,14,0.025)?
2. (Original post by e^x)
We only get the upper % points table for the F distribution.

so to work out F(10,14,0.975) I used the tables and got 3.147, but how do I get F(10,14,0.025)?
Take the reciprocal of the value you get by reversing the degrees of freedom. That is, 1/F(14,10,0.975), using your notation. Or get your values via software! You should get 0.2816576
3. (Original post by Gregorius)
Take the reciprocal of the value you get by reversing the degrees of freedom. That is, 1/F(14,10,0.975), using your notation. Or get your values via software! You should get 0.2816576
Thanks

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