::Free Statistics and Forecasting Software::



:: Concentration and Inequality ::

All rights reserved. The non-commercial (academic) use of this software is free of charge. The only thing that is asked in return is to cite this software when results are used in publications.

This free online calculator computes the following Concentration statistics: entropy, maximum entropy, normalized entropy, exponential index, Lorenz curve, Herfindahl index, Gini coefficient, and concentration coefficient. To be used with (absolute) frequencies.

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Source code of R module
Top | Output | Charts | References

Cite this software as:
Wessa P., (2021), Concentration and Inequality (v1.0.2) in Free Statistics Software (v1.2.1), Office for Research Development and Education, URL http://www.wessa.net/rwasp_concentration.wasp/
The R code is based on :
F A Cowell: Measurement of Inequality, 2000, in A B Atkinson / F Bourguignon (Eds): Handbook of Income Distribution, Amsterdam
F A Cowell: Measuring Inequality, 1995 Prentice Hall/Harvester Wheatshef
Marshall / Olkin: Inequalities: Theory of Majorization and Its Applications, New York 1979 (Aca- demic Press)
M Hall / N Tidemann: Measures of Concentration, 1967, JASA 62, 162-168
B C Arnold: Majorization and the Lorenz Order: A Brief Introduction, 1987, Springer
Top | Output | Charts | References

To cite Wessa.net in publications use:
Wessa, P. (2024), Free Statistics Software, Office for Research Development and Education,
version 1.2.1, URL https://www.wessa.net/

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Software Version : 1.2.1
Algorithms & Software : Patrick Wessa, PhD
Server : www.wessa.net

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