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Sujatha Distribution and its Applications

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  • Shanker Rama

    (Department of Statistics, Asmara, Eritrea)

Abstract

In this paper a new one-parameter lifetime distribution named “Sujatha Distribution” with an increasing hazard rate for modelling lifetime data has been suggested. Its first four moments about origin and moments about mean have been obtained and expressions for coefficient of variation, skewness, kurtosis and index of dispersion have been given. Various mathematical and statistical properties of the proposed distribution including its hazard rate function, mean residual life function, stochastic ordering, mean deviations, Bonferroni and Lorenz curves, and stress-strength reliability have been discussed. Estimation of its parameter has been discussed using the method of maximum likelihood and the method of moments. The applications and goodness of fit of the distribution have been discussed with three real lifetime data sets and the fit has been compared with one-parameter lifetime distributions including Akash, Shanker, Lindley and exponential distributions.

Suggested Citation

  • Shanker Rama, 2016. "Sujatha Distribution and its Applications," Statistics in Transition New Series, Statistics Poland, vol. 17(3), pages 391-410, September.
    • Handle: RePEc:vrs:stintr:v:17:y:2016:i:3:p:391-410:n:11
    DOI: 10.21307/stattrans-2016-029
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    References listed on IDEAS

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    5. Ghitany, M.E. & Al-Mutairi, D.K. & Nadarajah, S., 2008. "Zero-truncated Poisson–Lindley distribution and its application," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 79(3), pages 279-287.
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