ssym (version 1.5.2)

ssym-package: Fitting Semiparametric Log-symmetric Regression Models

Description

This package allows to fit a semi-parametric regression model suitable for analysis of data sets in which the response variable is continuous, strictly positive, and asymmetric.

Details

ll{ Package: ssym Type: Package Version: 1.5.2 Date: 2015-01-08 License: GPL-2 | GPL-3 }

References

Vanegas, L.H. and Paula, G.A. (2015a) A Semiparametric Approach for Joint Modeling of Median and Skewness. TEST (to appear) Vanegas, L.H. and Paula, G.A. (2015b) Log-symmetric distributions: statistical properties and parameter estimation. Brazilian Journal of Probability and Statistics (to appear)

Examples

data("Snacks", package="ssym")                                    
fit <- ssym.l(log(texture) ~ type + ncs(week) | type, data=Snacks,
               family='Student', xi=15)     
summary(fit)