The Zero-Adjusted Log-Symmetric Distributions: Point and Intervalar Estimation
DIEGO RISCO-COSAVALENTE,
FRANCISCO JOSÉ A. CYSNEIROS
Abstract:In this paper, a new class of semi-continuous distributions called zero-adjusted log-symmetric is introduced and studied. Some properties and parameters estimation by maximum likelihood method are derived and confidence intervals (CIs) are developed. A simulation study is conducted to evaluate properties of the maximum likelihood estimators in lighter/heavier-tailed distributions. Finally, an application in a real data set is presented to illustrate the flexibility of the proposed class of distributions.
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