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  2. Pareto distribution - Wikipedia

    en.wikipedia.org/wiki/Pareto_distribution

    The Pareto distribution, named after the Italian civil engineer, economist, and sociologist Vilfredo Pareto, [2] is a power-law probability distribution that is used in description of social, quality control, scientific, geophysical, actuarial, and many other types of observable phenomena; the principle originally applied to describing the distribution of wealth in a society, fitting the trend ...

  3. Pareto index - Wikipedia

    en.wikipedia.org/wiki/Pareto_index

    It is one of the parameters specifying a Pareto distribution and embodies the Pareto principle. As applied to income, the Pareto principle is sometimes stated in popular expositions by saying q=20% of the population has p=80% of the income. In fact, Pareto's data on British income taxes in his Cours d'économie politique indicates that about 20 ...

  4. Power law - Wikipedia

    en.wikipedia.org/wiki/Power_law

    Income is distributed according to a power-law known as the Pareto distribution (for example, the net worth of Americans is distributed according to a power law with an exponent of 2). On the one hand, this makes it incorrect to apply traditional statistics that are based on variance and standard deviation (such as regression analysis ). [ 13 ]

  5. Pareto principle - Wikipedia

    en.wikipedia.org/wiki/Pareto_principle

    The Pareto principle may apply to fundraising, i.e. 20% of the donors contributing towards 80% of the total. The Pareto principle (also known as the 80/20 rule, the law of the vital few and the principle of factor sparsity [1] [2]) states that for many outcomes, roughly 80% of consequences come from 20% of causes (the "vital few").

  6. Pareto interpolation - Wikipedia

    en.wikipedia.org/wiki/Pareto_interpolation

    Pareto interpolation is a method of estimating the median and other properties of a population that follows a Pareto distribution.It is used in economics when analysing the distribution of incomes in a population, when one must base estimates on a relatively small random sample taken from the population.

  7. Vilfredo Pareto - Wikipedia

    en.wikipedia.org/wiki/Vilfredo_Pareto

    It is a statistical tool that graphically demonstrates the Pareto principle or the 80–20 rule. The Pareto principle concerns the distribution of income, while the Pareto distribution is a probability distribution used, among other things, as a mathematical realization of Pareto's law, and Ophelimity is a

  8. Income inequality metrics - Wikipedia

    en.wikipedia.org/wiki/Income_inequality_metrics

    Income distribution has always been a central concern of economic theory and economic policy. Classical economists such as Adam Smith, Thomas Malthus and David Ricardo were mainly concerned with factor income distribution, that is, the distribution of income between the main factors of production, land, labour and capital.

  9. ABC analysis - Wikipedia

    en.wikipedia.org/wiki/ABC_analysis

    The ABC concept is based on Pareto's law. [10] If too much inventory is kept, the ABC analysis can be performed on a sample. After obtaining the random sample, the following steps are carried out for the ABC analysis. Step 1: Compute the annual usage value for every item in the sample by multiplying the annual requirements by the cost per unit.