FDistribution
Table  use this calculator instead!
This tool is an equivalent of an Fdistribution table and
calculates percentile values for given values on an Fdistribution
curve. You must provide the Fvalue, and the degrees of freedom in
both numerator and denominator. The Fdistribution
calc makes it very easy to find the cumulative probability
associated with an Fvalue.
Fdistribution curve
The Fdistribution
table is approximated using the following formula:
where
a_{1}
=
0.196854
a_{2}
=
0.115194
a_{3}
=
0.000344
a_{4}
=
0.019527
d_{1} =
degrees of freedom in numerator
d_{2}
=
degrees of freedom in denominator
Example:
What is the percentile on a Fdistribution table when the Fvalue is 2
and the degrees of freedom are both 5?
We use our online table and enter:
Fvalue = 2
Degrees of freedom in numerator = 5
Degrees of freedom in denominator = 5
The result is
Percentile = 0.7681
Another example:
If the fvalue is 0.47, the degrees of freedom in the numerator is just
1 and in the denominator is 17, use the tool like this, and get:
Try it!!
Please,
enable JavaScript codes on your navigator, so you can use this
calculator.


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