IDAX.QF_H - High-tail inverse Fisher distribution

The QF_H function returns the value x of a variable that follows the Fisher distribution for which the probability of being greater than x is equal to the specified percentage.

Syntax

IDAX.QF_H(DOUBLE percentage, INT8 dfNomin, INT8
dfDenom)

Parameter descriptions

percentage: Mandatory.; The requested limit of the percentage.; If percentage is not in the range of 0 - 1, QF_H(percentage,dfNomin,dfDenom) is null for all dfNomin values and dfDenom values.; Min: 0.00000000001; Max: 0.99999999999; Data type: DOUBLE
dfNomin: Mandatory.; The number of degrees of freedom for the nominator.; If dfNomin is 0 or less, QF_H(percentage,dfNomin,dfDenom) is null for all percentage values.; Min: 1; Data type: INT8
dfDenom: Mandatory.; The number of degrees of freedom for the denominator.; If dfDenom is 0 or less, QF_H(percentage,dfNomin,dfDenom) is null for all percentage values.; Min: 1; Data type: INT8

If PF_H(x,dfNomin,dfDenom)=perc, QF_H(perc,dfNomin,dfDenom)=x.

Returned information

DOUBLE the point x where PF_H(x,dfNomin,dfDenom)=percentage.