Selected Statistical Tests for Median and Their Properties
DOI:
https://doi.org/10.18778/0208-6018.330.10Keywords:
median, critical value, significance test, parametric test, nonparametric testAbstract
In the paper, a selection of statistical tests for median are presented. In particular, parametric and nonparametric significance tests are considered. In the case of parametric tests the critical regions are constructed on the basis of the known population distribution and the form of the alternative hypothesis. For chosen distributions the critical values are presented. In the case of nonparametric tests we consider tests for which the sample median dispersion is estimated based on order statistics of appropriate ranks. The use of the bootstrap method for the median dispersion estimation in the test statistic construction is the author’s own proposal. The simulation analysis of the nonparametric tests’ properties allows to compare these tests with each other, showing better results for the bootstrap variant, especially for small samples.
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References
Baszczyńska A., Pekasiewicz D. (2010), Selected Methods of Interval Estimation of the Median. The Analysis of Accuracy of Estimation, “Acta Universitatis Lodziensis. Folia Oeconomica”, no. 235, pp. 21–30.
Google Scholar
Białek J. (2014), Simulation Study of an Original Price Index Formula, “Communications in Statistics, Simulation and Computation”, no. 43(2), pp. 285–297.
Google Scholar
Bloch D.A., Gastwirth J.L, (1968), On a Sample Estimate of Reciprocal of the Density Function, “Annals of Mathematical Statistics”, no. 39, pp. 1083–1085.
Google Scholar
Davison A.C., Hinkley D.V. (1997), Bootstrap Methods and their Application, Cambridge University Press, Cambridge.
Google Scholar
Domański C., Pekasiewicz D., Baszczyńska A., Witaszczyk A. (2014), Testy statystyczne w procesie podejmowania decyzji, Wydawnictwo Uniwersytetu Łódzkiego, Łódź.
Google Scholar
Domański C., Pruska K. (2000), Nieklasyczne metody statystyczne, PWE, Warszawa.
Google Scholar
Efron B., Tibshirani R.J. (1993), An Introduction to the Bootstrap, Chapman & Hall, New York.
Google Scholar
Kisielińska J. (2015), Bootstrapowy estymator mediany dla próby o nieparzystej liczbie elementów, “Metody Ilościowe w Badaniach Ekonomicznych”, no. 14(3), pp. 172–182.
Google Scholar
Olivie D.J. (2005), A Simple Confidence Interval for the Median, http: http://lagrange.math.siu.edu/Olive/ppmedci.pdf [accesed: 5.09.2016].
Google Scholar
Zieliński R. (2000), A Median – Unbiased Estimator of the Characteristic Exponent of a Symmetric Stable Distribution, „Statistics”, no. 39(1), pp. 67–71.
Google Scholar
Zieliński R. (2011), Statystyka matematyczna stosowana. Elementy, Wydawnictwo Centrum Studiów Zaawansowanych Politechniki Warszawskiej, Warszawa.
Google Scholar
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Additional Files
- Plot "Density functions of test statistic (14) and n=100"
- Plot "Density functions of test statistic (14) and n=300"
- Plot "Density functions of test statistic (15) and n=100"
- Plot "Density functions of test statistic (15) and n=300"
- Plot "Estimated power of test I and test II , n=100"
- Plot "Estimated power of test I and test II , n=300"