How this calculation works
Calculate the right-tail area under the F distribution for a given statistic.
Use the regularized beta function at df₂/(df₂+df₁F)A worked example
At F=1 with equal degrees of freedom, the right-tail probability is one half.
Good to know
Enter numerator and denominator degrees of freedom in their original order.
Reference: OpenStax Introductory Statistics (opens in a new tab) ↗
Read the result
Calculate the right-tail area under the F distribution for a given statistic.
The primary result is labeled “Upper-tail probability”. Keep the input definitions in view when comparing this result with another method.
Try a related calculation
Enter numerator and denominator degrees of freedom in their original order.
For a related exercise, try the statistics calculator.
A few questions, answered
How can I check the default inputs by hand?
At F=1 with equal degrees of freedom, the right-tail probability is one half.
Which rule does this calculator apply?
Use the regularized beta function at df₂/(df₂+df₁F)