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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Analysis of Salaries and Some Non-traditional Measures of Location
Author(s)
Milan Terek, Nguyen Dinh He
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DOI:10.17265/1548-6583/2013.05.012
Affiliation(s)
ABSTRACT
The paper deals with an analysis of how to use certain measures of location in analysis of salaries. One of the traditional measures of location, the mean should offer typical value of variable, representing all its values by the best way. Sometimes, the mean is located in the tail of the distribution and gives a very biased idea about the location of the distribution. In these cases, using different measures of location could be useful. Trimmed mean is described. The trimmed mean refers to a situation where a certain proportion of the largest and smallest observations are removed and the remaining observations are averaged. The construction of some measures of location is based on the analysis of outliers. Outliers are characterized. Then the possibilities of the detection of outliers are analyzed. Computing of one-step M-estimator and modified one-step M-estimator of location is described. A comparison of the trimmed means and M-estimators of location is presented. Finally, the paper focuses on the application of the trimmed mean and M-estimators of location in analysis of salaries. The analysis of salaries of employers of the big Slovak companies in second half of the year 2009 is realized. The data from the census are used in the analysis. The median, 20% trimmed mean and the characteristics, based on the one-step M-estimator of location and modified one step M-estimator, are calculated.
KEYWORDS
trimmed mean, detecting outliers, one-step M-estimator, modified one-step M-estimator, analysis of salaries
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