public function FProbability() { $F = $this->FStatistic(); $n = $this->n; // Degrees of freedom // Need to make sure the 1 in $d₁ should not be $this->fit_parameters; $ν = $this->ν; $d₁ = $n - $ν - 1; $d₂ = $ν; return F::CDF($F, $d₁, $d₂); }