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Given a sample of variates , ..., , reorder them so that . Then is called the th order statistic (Hogg and Craig 1970, p. 146), sometimes also denoted . Special cases include the minimum
(1) |
and maximum
(2) |
Important functions of order statistics include the statistical range
(3) |
midrange
(4) |
and statistical median
(5) |
(Hogg and Craig 1970, p. 152).
If has probability density function and distribution function , then the probability function of is given by
(6) |
for , ..., (Rose and Smith 2002, pp. 311 and 454).
A robust estimation technique based on linear combinations of order statistics is called an L-estimate.
REFERENCES:
Balakrishnan, N. and Chen, W. W. S. Handbook of Tables for Order Statistics from Lognormal Distributions with Applications. Amsterdam, Netherlands: Kluwer, 1999.
Balakrishnan, N. and Cohen, A. C. Order Statistics and Inference. New York: Academic Press, 1991.
Balakrishnan, N. and Rao, C. R. (Eds.). Handbook of Statistics, Vol. 16: Order Statistics: Theory and Methods. Amsterdam, Netherlands: Elsevier, 1998.
Balakrishnan, N. and Rao, C. R. (Eds.). Order Statistics: Applications. Amsterdam, Netherlands: Elsevier, 1998.
David, H. A. Order Statistics, 2nd ed. New York: Wiley, 1981.
Gibbons, J. D. and Chakraborti, S. (Eds.). Nonparametric Statistic Inference, 3rd ed. exp. rev. New York: Dekker, 1992.
Hogg, R. V. and Craig, A. T. Introduction to Mathematical Statistics, 3rd ed. New York: Macmillan, 1970.
Rose, C. and Smith, M. D. "Order Statistics." §9.4 in Mathematical Statistics with Mathematica. New York: Springer-Verlag, pp. 311-322, 2002.
Rose, C. and Smith, M. D. "Computational Order Statistics." Mathematica J. 9, 790-802, 2005.
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