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Atlantis Studies in Probability and Statistics
Series Editors:
Chris P. TsokosUniversity of South Florida Tampa, Tampa, USA
(ISSN: 1879-6893)
Aims and scope of the series
The Series ‘Atlantis Studies in Probability and Statistics’ publishes studies of high-quality
throughout the areas of probability and statistics that have the potential to make a signifi-
cant impact on the advancement in these fields. Emphasis is given to broad interdisciplinary
areas at the following three levels:
(I) Advanced undergraduate textbooks, i.e., aimed at the 3rd and 4th years of undergrad-
uate study, in probability, statistics, biostatistics, business statistics, engineering statistics,
operations research, etc.;
(II) Graduate level books, and research monographs in the above areas, plus Bayesian, non-
parametric, survival analysis, reliability analysis, etc.;
(III) Full Conference Proceedings, as well as Selected topics from Conference Proceedings,
covering frontier areas of the field, together with invited monographs in special areas.
All proposals submitted in this series will be reviewed by the Editor-in-Chief, in consulta-
tion with Editorial Board members and other expert reviewers
For more information on this series and our other book series, please visit our website at:
www.atlantis-press.com/publications/books
AMSTERDAM – PARIS – BEIJING
c© ATLANTIS PRESS
An Introduction to Order Statistics
Mohammad AhsanullahRider University,
Department of Management Sciences,2083 Lawrenceville Road,
Lawrenceville, NJ 08648, USA
Valery B. NevzorovSt. Petersburg State University,
Department of Mathematics and Mechanics,198904 St. Petersburg, Russia
Mohammad ShakilMiami Dade College (Hialeah Campus),
Department of Mathematics, 1800 West 49th Street,Miami, FL 33012, USA
AMSTERDAM – PARIS – BEIJING
Atlantis Press
8, square des Bouleaux75019 Paris, France
For information on all Atlantis Press publications, visit our website at: www.atlantis-press.com
All books in this series are published in collaboration with Springer.
Copyright
This book is published under the Creative Commons Attribution-Non-commercial license, meaningthat copying, distribution, transmitting and adapting the book is permitted, provided that this is donefor non-commercial purposes and that the book is attributed.This book, or any parts thereof, may not be reproduced for commercial purposes in any form or byany means, electronic or mechanical, including photocopying, recording or any information storageand retrieval system known or to be invented, without prior permission from the Publisher.
Atlantis Studies in Probability and Statistics
Volume 1: Bayesian Theory and Methods with Applications - Vladimir P. Savchuk, C.P. TsokosVolume 2: Stochastic Differential Games. Theory and Applications - K.M. Ramachandran, C.P.Tsokos
ISBNsPrint: 978-94-91216-82-4E-Book: 978-94-91216-83-1ISSN: 1879-6893
c© 2013 ATLANTIS PRESS
To my wife, Masuda
M. Ahsanullah
To my wife, Ludmilla
Valery B. Nevzorov
To my parents & my wife, Nausheen
M. Shakil
Preface
Dear Reader, imagine that you are a participant of Olympic Games, say, you are one of
n competitors in high-jumping. Before the start the future results of participants can be
regarded as some independent random variables X1, X2, . . . , Xn. The competition will range
all attempts of sportsmen and their final results can be considered as the observed values
of the so-called order statistics X1,n � X2,n � · · · � Xn,n. Hence to predict the result of
the winner you must know the distribution of the extreme order statistic Xn,n. The future
destinations of the silver and bronze prizewinners are determined as Xn−1,n and Xn−2,n
correspondingly. If you are a sprinter then the future results of the gold, silver and bronze
medaled sportsmen are associated with minimal order statistics X1,n, X2,n, and X3,n . These
are the simplest examples of the “sport” applications of order statistics. Other examples
of the applicability of order statistics (and especially of extreme order statistics) can be
suggested by meteorologists, hydrologists, business analysts. The knowledge of the theory
of order statistics is useful for specialists in the actuarial science and the reliability theory.
Some attempts to present a systematic exposition of the theory of order statistics and ex-
tremes began essentially from the publication of the David’s (1970) (the second issue of it
appeared in 1981). We can mention also the following books, where the theory of order
statistics and their different applications were presented: Galambos (1978, 1987), Arnold,
Balakrishnan and Nagaraja (1992, 1998), Kamps (1995), Nevzorov (2000), Ahsanullah
and Nevzorov (2001, 2005), David and Nagaraja (2003), Ahsanullah and Kirmani (2008).
Almost all of these books are rather theoretical. We suggest here (see also Ahsanullah
and Nevzorov (2005)) another way to study this theory. Together with the corresponding
theoretical results, which are presented as 21 chapters, we suggest our readers to solve a
lot of exercises. From one side it allows to understand better the main ideas and results
of the theory. From other side the reader can determine his/her level of permeation to this
material. Solutions of these exercises are given in the end of the corresponding chapters.
vii
viii An Introduction to Order Statistics
The aim of the book is to present various properties of the order statistics and inference
based on them. The book is written on a lower technical level and requires elementary
knowledge of algebra and statistics. The first chapter describes some basic definitions and
properties of order statistics. Chapters 2 to 4 present sample quantiles, representation of
order statistics as functions of independent and identically distributed random variables,
conditional distributions and order statistics of discrete distributions. Chapters 5 to 11 give
the moment properties and asymptotic behavior of middle, intermediate and extreme order
statistics. Chapters 12 to 15 discuss estimation of parameters and their properties. Chap-
ters 16 to 20 deal with order statistics from extended samples, record values, characteriza-
tions, order statistics from F-alpha distribution and generalized order statistics. Chapter 21
contains several interesting problems with hints to solve them.
Summer research grant and sabbatical leave from Rider university enabled the first author
to complete his part of the work. The work of the second author was supported by the grant
RFFI 10-01-00314 and the grant of Science School 4472.2010. The third author is grateful
to Miami Dade College for all the supports including STEM grants.
Contents
Preface vii
1. Basic definitions 1
2. Distributions of order statistics 15
3. Sample quantiles and ranges 23
4. Representations for order statistics 37
5. Conditional distributions of order statistics 51
6. Order statistics for discrete distributions 61
7. Moments of order statistics: general relations 75
8. Moments of uniform and exponential order statistics 83
9. Moment relations for order statistics: normal distribution 95
10. Asymptotic behavior of the middle and intermediate order statistics 105
11. Asymptotic behavior of the extreme order statistics 115
12. Some properties of estimators based on order statistics 131
13. Minimum variance linear unbiased estimators 139
14. Minimum variance linear unbiased estimators and predictors based on
censored samples 153
15. Estimation of parameters based on fixed number of sample quantiles 163
ix
x An Introduction to Order Statistics
16. Order statistics from extended samples 169
17. Order statistics and record values 175
18. Characterizations of distributions based on properties of order statistics 189
19. Order statistics and record values based on Fα distributions 201
20. Generalized order statistics 217
21. Compliments and problems 227
Bibliography 231
Index 243