Hegazy M. Zaher

Estimation of Logistic Parameters Using a Fuzzy Least-squares Method and Different Types of Moments

Hegazy M. Zaher, Ahmed A. El-sheik & Noura A. T. Abu El-Magd · Journal of Scientific Research and Reports · 2014

The main attention of this paper is to deduce the estimators of the parameters of the Logistic distribution using five estimating methods, namely, the fuzzy least-squares method, the LQ-moments (linear quantile moments) with three cases (trimean, median and Gastwirth), TL-moments...

Open access Research Article 10.9734/JSRR/2015/12483

A Comparison between Fuzzy Log-logistic Parameters Estimators and Other Estimators

Hegazy M. Zaher, Ahmed A. El-sheik & A. T. Abu El-Magd · Current Journal of Applied Science and Technology · 2014

The main concern of this paper is to derive the fuzzy estimators for the two-parameter Log-logistic distribution. The TL-moments, L-moments and LQ-moments formulas are obtained for the Log-logistic distribution. Also, the estimation of these parameters is considered using the max...

Open access Research Article 10.9734/BJAST/2014/11755

Estimation of Pareto Parameters Using a Fuzzy Least-Squares Method and Other Known Techniques with a Comparison

Hegazy M. Zaher, Ahmed A. El-sheik & Noura A. T. Abu El-Magd · Journal of Advances in Mathematics and Computer Science · 2014

The purpose of this paper is to obtain the fuzzy least-squares estimator for the two-parameter Pareto distribution and to compare the fuzzy estimator with different types of estimators. The trimmed linear moments (TL-moments), linear moments (L-moments) and linear quantile moment...

Open access Research Article 10.9734/BJMCS/2014/10890