is_specified_input_of ANOVA number of degrees of freedom denominator degrees of freedom Philippe Rocca-Serra den df The degree of freedom denominator is the number of degrees of freedom that the estimate of variance used in the denominator is based on. It is one of the parameters for the F-distribution used to compute probabilities in analysis of variance. Hanna Cwiek df2 term request: https://github.com/ISA-tools/stato/issues/71 ready for release