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Questions tagged [lorenz-curve]

In economics, the Lorenz curve is a graphical representation of the cumulative distribution function of the empirical probability distribution of wealth.

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Lorenz Curve for Insurance Pure Premium

I'm testing various pure premium models and want to make a Lorenz curve to compare the models. The goal is to show underwriters which models are better. I'm not sure if I'm doing it correctly. I'm ...
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How can I distill revenue diversity into a single number?

I have a dataset of revenue per customer per month. I want to have a measure of the diversity of this revenue, for which (to me) there are two aspects: More customers is better A more equal ...
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Lorenz curve and inequality between sports teams

I was wondering if you could develop a metric to study the inequality for a given stat such as how unequal points are distributed throughout a team, or how unequal rebounds are distributed throughout ...
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37 views

Gini coefficients - Accounting for firm exits

What is the appropriate way to measure the Gini coefficient over time in an industry where a large number of firms are exiting? Should the Gini coefficient be calculated using the initial number of ...
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How to compute the Wealth Lorenz curve with negative values?

I have some data with asset holdings (wealth) of a large group of people. I want to compute the Lorenz curve and Gini coefficient of my population. The problem is that a large fraction of people have ...
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376 views

What is the name of this cumulative plot?

This may come off as a silly question, but I am having a hard time identifying the name of the following cumulative plot. For example, say I have the following data: ...
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293 views

Computing Lorenz asymmetry cofficient (S)

Damgaard and Weiner in Describing Inequality in Plant Size or Fecundity discuss computing the Lorenz asymmetry coefficient, S as well as confidence intervals for the estimates of S for a sample. D A ...
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Lorenz curve and Gini coefficient for measuring classifier performance

I often use a ROC curve and the area under that curve as a measure of classifier accuracy in 2-class problems, e.g: ...
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Is Lorenz curve the same as QQ-plot?

Are Lorenz curves and QQ-plots the same? If not, where are the differences? I read about both of them and they appear to be two terms for the same type of plot / statistical technique to compare ...