inv method

@override Future<double?> inv({ required double alpha, required int df1, required int df2, })

Implementation

@override
Future<double?> inv({
  required double alpha,
  required int df1,
  required int df2,
}) async {
  try {
    return jstat.centralFInv(1 - alpha, df1, df2);
  } catch (e) {
    return null;
  }
}