void FStat(Int32 Nu1, Int32 Nu2, ref Double AMean, ref Double AVariance, ref Double ASkewness, ref Double AKurtosis)
F (Fisher-Snedecor) distribution moments (mean, variance, skewness, excess kurtosis).
| # | Name | Description |
|---|---|---|
| 1 | AMean | Returns the mean, = Nu2/(Nu2-2) |
| 2 | defined only for Nu2 > 2. | |
| 3 | AVariance | Returns the variance |
| 4 | defined only for Nu2 > 4. | |
| 5 | ASkewness | Returns the skewness |
| 6 | defined only for Nu2 > 6. | |
| 7 | AKurtosis | Returns the EXCESS kurtosis |
| 8 | defined only for Nu2 > 8. | |
| 9 | Nu1 | Numerator degrees of freedom, integer > 0. |
| 10 | Nu2 | Denominator degrees of freedom, integer > 0. |
Result: stored in self (calling object)
Remarks:
Returns the moments of the F distribution. Each moment exists only when the denominator degrees of freedom nu_2 is large enough (mean needs nu_2 > 2, variance nu_2 > 4, skewness nu_2 > 6, kurtosis nu_2 > 8); any moment whose condition is not met is returned as NAN. If nu_1 <= 0 or nu_2 <= 0 all four outputs are NAN.