11.29 Cumulative Plot

An Empirical Cumulative Distribution Function plot (or ECDF for short) provides a graphical representation of the cumulative distribution of a dataset. It shows how the data values are distributed across the range of the dataset, highlighting the proportion of observations below each value. The x-axis represents the data values from the dataset while the y-axis is the proportion of data points below a particular value of x. Such plots provide a different but interesting view of how the data is distributed, accumulative over the x range. It helps in understanding the spread and concentration of data points and can be used to compare different datasets or groups.

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