Universiti Teknologi Malaysia Institutional Repository

A Comparison Of Plotting Formulas For The Pearson Type Iii Distribution

Shabri, Ani (2002) A Comparison Of Plotting Formulas For The Pearson Type Iii Distribution. Jurnal Teknologi C (36C). pp. 61-74. ISSN 0127-9696


Official URL: http://www.penerbit.utm.my/onlinejournal/36/C/JT36...


Unbiased plotting position formulas are discussed to fit the Pearson Type 3 distribution (PIII). The best quantile estimate made from the plotting position should be unbiased and should have the smallest root means square error among all such estimates. Probability plot correlation coefficient (PPCC) is used to evaluate goodness of fit to test the PIII distribution hypothesis. Results obtained using the annual maximum flow data from Peninsular of Malaysia based on PPCC show the plotting position formulas consistently produced linear probability plots with correlation coefficient near to one. Based on root mean square error (RMSE) and root mean absolute error, the Weibull formula performs better than the other formulas.

Item Type:Article
Uncontrolled Keywords:Plotting Position, quantile, unbiased, root means square error
Subjects:Q Science > QA Mathematics
ID Code:1350
Deposited By: Mohd. Nazir Md. Basri
Deposited On:02 Mar 2007 07:59
Last Modified:01 Nov 2017 04:17

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