Also known as: eCDF or EDF
An empirical cumulative distribution function (eCDF or EDF) is a cumulative distribution function estimated directly from observed data. At any value, it gives the fraction of observations in the dataset that are less than or equal to that value.
EDF) A cumulative distribution function based on empirical measurements from a real dataset. The value of the function at any point along the x-axis is the fraction of observations in the dataset that are less than or equal to the specified value.