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Following graph is from this article: enter image description here

It plots percent of participants showing improvement of different percent cut-off values (or more). This can be applied to a large number of situations where 2 drugs or interventions are given to 2 groups and some parameter is measured before and after study period.

A similar graph plotted for iris dataset is as follows:

enter image description here

Is there any general name for this type of plot/graph?

Thanks for your insight.

rnso
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  • Although the means of construction of the `iris` data plot is unclear, both of the images look like empirical survival functions. Compare to this plot in `R`: `library(data.table); X – whuber Sep 02 '20 at 15:42

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I know this as an empirical survival plot for the corresponding variable, grouped by another factor. Note that the values plotted are simply $1 - \hat{F_n}(i)$ where $\hat{F_n}(\cdot)$ is the empirical cumulative distribution function.

Maximilian Aigner
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    +1. However, a close look at the last plot shows that's not quite how it is constructed. Instead, only points of the form $(x, S(x))$ with $x\in\{0,1/2,1,\ldots,8\}$ have been plotted. – whuber Sep 02 '20 at 15:44
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    @whuber you’re right, I guess it might be more correct to say that the plot shows 1-ecdf(x), sampled at regular points and linearly interpolated. – Maximilian Aigner Sep 02 '20 at 15:46
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    Other names and more discussion at https://stats.stackexchange.com/questions/485328/derivation-and-meaning-of-1-minus-the-cumulative-distribution – Nick Cox Sep 02 '20 at 15:58
  • It will be very useful if you can add code (R or Python) to properly draw "Emperical Survival Plot". – rnso Sep 02 '20 at 17:30