Statistical Papers

, Volume 60, Issue 6, pp 1971–1999 | Cite as

Some properties of conditional partial moments in the context of stochastic modelling

  • S. M. SunojEmail author
  • N. Vipin
Regular Article


There are many practical situations where the access to conditional distributions are more likely than to their joint distribution. In the present paper we study partial moments in the conditional setup. It is shown that the conditional partial moments determine the corresponding distribution uniquely. The relationships with reliability measures such as conditional hazard rate and mean residual life are obtained. Characterizations results based on conditional partial moments for some well known bivariate lifetime distributions are derived. We study properties of conditional partial moments in the context of weighted models. Characterizations of conditional partial moments using income gap ratio are also obtained. Finally, non parametric estimators for conditional partial moments are introduced which are validated using simulated and real data sets.


Conditional partial moment Conditionally specified models Conditional survival models Income gap ratio 

Mathematics Subject Classification

62E10 62N05 



The first author would like to thank the support of University Grants Commission, India, under the Special Assistance Programme. The second author wish to thank Cochin University of Science and Technology, Cochin, India for the financial assistance for carrying out this research work.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  1. 1.Department of StatisticsCochin University of Science and TechnologyCochinIndia

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