The QF function returns the value x of a variable that follows the Fisher distribution
for which the probability of being smaller or equal to x is equal to the specified
percentage.
Syntax
IDAX.QF(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(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(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(percentage,dfNomin,dfDenom) is null for all percentage values.
- Min: 1
- Data type: INT8
If PF(x,dfNomin,dfDenom)=perc, QF(perc,dfNomin,dfDenom)=x.
Returned information
DOUBLE the point x, where PF(x,dfNomin,dfDenom)=percentage.