Talk:Lorenz curve

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I agree, I had trouble learning about the Lorenz curve from this page because the cdf is different. The cdf plots the cumulative % of the variable against the category. The Lorenz plots the cumulative % of the variable against the cumulative % of population (calculated from the categories). The first sentence and the graph labeling should be revised. —Preceding unsigned comment added by Intlthahc (talk • contribs) 20:37, 12 January 2008 (UTC)

Is it really a "cumulative" dist. fn. ?? The the y-axis gives the sum as a PERCENTAGE of the total, whereas in the cdf, the y-axis will give the un-normalized sum. This will produce a logrithmic-shaped graph rather than an exponential one... Nigel, May 7, 2006

The Lorenz curve is convexe and not concave as is said in the text, see the graph below.

Can we get a real life example for the illustration from some place? Paranoid 20:10, 6 Jan 2005 (UTC)

The Lorenz Curve is used in geography as well to represent unequal distribution of the world's population over area...please add that in

'... we call this line the line of perfect equality or the 45° line.' It's only 45° when both axes have equal scales. Holy Cow 20:55, 18 March 2006 (UTC)

[edit] Discrete Probability Functions

What does a Lorenz curve look like for a discrete probability function? What are the formulas for calculating the curve in such a case? DCary 04:19, 26 May 2006 (UTC)