Explicit Accurate Approximations for Fitting the Parameters of LU
The Tadikamalla-Johnson unlimited system based on the Logistic density may be fitted through the equivalence of the skewness (✓β1) and kurtosis (β2) in the model and distribution approximated. One-shot accurate approximations compact enough for small calculators and covering an extensive domain are described.
Keywordsapproximations Johnson’s system least squares moments transformations rational fraction
Unable to display preview. Download preview PDF.
- Tadikamalla, P.R., Johnson, N.L. (1979). Systems of frequency curves generated by transformations of logistic variables. Technical Report, University of North Carolina.Google Scholar