Timeline for Cumulative / Cumulative Plot (or "Visualizing a Lorenz Curve")
Current License: CC BY-SA 3.0
16 events
| when toggle format | what | by | license | comment | |
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| Jan 14, 2016 at 18:39 | answer | added | AAnand | timeline score: -2 | |
| Nov 5, 2013 at 14:32 | vote | accept | grssnbchr | ||
| Aug 8, 2013 at 6:55 | comment | added | grssnbchr | Thanks for all the comments, I was looking for a Lorenz curve indeed @NickCox. | |
| Aug 8, 2013 at 6:54 | history | edited | grssnbchr | CC BY-SA 3.0 |
edited title
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| Aug 8, 2013 at 6:52 | answer | added | grssnbchr | timeline score: 3 | |
| Aug 7, 2013 at 16:59 | answer | added | Blain Waan | timeline score: 6 | |
| Aug 7, 2013 at 15:20 | comment | added | Metrics | Have a look at package ineq in R for that. | |
| Aug 7, 2013 at 14:44 | comment | added | whuber♦ | I guess it comes down to what you mean by "x% of the data"--is it the x/100 percentile or is it x% of the cumulative (ordered) total? The latter is the Lorenz curve @Nick Cox references. | |
| Aug 7, 2013 at 14:43 | comment | added | Nick Cox | @whuber I think "10% of the users contribute 50% of the data" is more a Lorenz curve question. A Lorenz curve is a PP plot. | |
| Aug 7, 2013 at 14:42 | comment | added | grssnbchr |
I know ecdf and have used it before, but in the "classic" way that the x-axis shows the number of postings and the y-axis their probability. I don't know how to do something like above.
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| Aug 7, 2013 at 14:42 | comment | added | Nick Cox | Lorenz curve: see en.wikipedia.org/wiki/Lorenz_curve That is easy to search for in R circles. | |
| Aug 7, 2013 at 14:40 | comment | added | whuber♦ |
The question is very well put (and I love the sketch). Check out ecdf in R for a start. The term is "empirical cumulative distribution function." You might also be interested in "probability plots" and "QQ plots" as well: they are versions of the ECDF showing the data on different (nonlinear) scales.
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| Aug 7, 2013 at 14:40 | history | edited | Nick Cox | CC BY-SA 3.0 |
added 1 characters in body
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| S Aug 7, 2013 at 14:36 | history | suggested | QuantIbex |
Added r tag
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| Aug 7, 2013 at 14:35 | review | Suggested edits | |||
| S Aug 7, 2013 at 14:36 | |||||
| Aug 7, 2013 at 14:30 | history | asked | grssnbchr | CC BY-SA 3.0 |