Application of LQ-moment ratio diagram in selecting the best distribution

The method of moments has been one of the simplest and conventional parameter estimation techniques used in statistical hydrology. However, moment estimates are usually inferior in quality and generally not as efficient as the L-moment estimates, especially for distribution with three or more parame...

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Main Authors:	Ani bin Shabri, Abdul Aziz Jemain
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2010
Online Access:	http://journalarticle.ukm.my/7385/ http://journalarticle.ukm.my/7385/ http://journalarticle.ukm.my/7385/1/01_Md_Yeaminhossain.pdf

id	ukm-7385
recordtype	eprints
spelling	ukm-73852016-12-14T06:43:55Z http://journalarticle.ukm.my/7385/ Application of LQ-moment ratio diagram in selecting the best distribution Ani bin Shabri, Abdul Aziz Jemain, The method of moments has been one of the simplest and conventional parameter estimation techniques used in statistical hydrology. However, moment estimates are usually inferior in quality and generally not as efficient as the L-moment estimates, especially for distribution with three or more parameters. Of late, many regional frequency studies in hydrology use the L-moment ratio diagram to select the most appropriate distribution of hydrologic and meteorological data. An advantage of L-moment ratio diagrams is that one can compare the fit of several distributions using a single graphical instrument. The purpose of this paper is to revisit the LQ moments and to develop the LQ-moments ratio diagrams based on median estimator. Using flood-flow data at 73 stations in Peninsular Malaysia, we explored the suitability of various flood frequency models using LQ-moments ratio diagrams compared with L-moments ratio diagrams. The result shows that the new diagrams perform as well as L-moments ratio diagrams for selecting a suitable frequency distributions and makes it an attractive option in flood frequency analysis. Universiti Kebangsaan Malaysia 2010-08 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/7385/1/01_Md_Yeaminhossain.pdf Ani bin Shabri, and Abdul Aziz Jemain, (2010) Application of LQ-moment ratio diagram in selecting the best distribution. Sains Malaysiana, 39 (4). pp. 647-653. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol39num4_2010/contentsVol39num4_2010.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	The method of moments has been one of the simplest and conventional parameter estimation techniques used in statistical hydrology. However, moment estimates are usually inferior in quality and generally not as efficient as the L-moment estimates, especially for distribution with three or more parameters. Of late, many regional frequency studies in hydrology use the L-moment ratio diagram to select the most appropriate distribution of hydrologic and meteorological data. An advantage of L-moment ratio diagrams is that one can compare the fit of several distributions using a single graphical instrument. The purpose of this paper is to revisit the LQ moments and to develop the LQ-moments ratio diagrams based on median estimator. Using flood-flow data at 73 stations in Peninsular Malaysia, we explored the suitability of various flood frequency models using LQ-moments ratio diagrams compared with L-moments ratio diagrams. The result shows that the new diagrams perform as well as L-moments ratio diagrams for selecting a suitable frequency distributions and makes it an attractive option in flood frequency analysis.
format	Article
author	Ani bin Shabri, Abdul Aziz Jemain,
spellingShingle	Ani bin Shabri, Abdul Aziz Jemain, Application of LQ-moment ratio diagram in selecting the best distribution
author_facet	Ani bin Shabri, Abdul Aziz Jemain,
author_sort	Ani bin Shabri,
title	Application of LQ-moment ratio diagram in selecting the best distribution
title_short	Application of LQ-moment ratio diagram in selecting the best distribution
title_full	Application of LQ-moment ratio diagram in selecting the best distribution
title_fullStr	Application of LQ-moment ratio diagram in selecting the best distribution
title_full_unstemmed	Application of LQ-moment ratio diagram in selecting the best distribution
title_sort	application of lq-moment ratio diagram in selecting the best distribution
publisher	Universiti Kebangsaan Malaysia
publishDate	2010
url	http://journalarticle.ukm.my/7385/ http://journalarticle.ukm.my/7385/ http://journalarticle.ukm.my/7385/1/01_Md_Yeaminhossain.pdf
first_indexed	2023-09-18T19:49:33Z
last_indexed	2023-09-18T19:49:33Z
_version_	1777406127708831744

Application of LQ-moment ratio diagram in selecting the best distribution

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