Expected value

(General math formulation) The sum (integral) of a cumulative distribution function of the random variable over a given probability space.a cumulative distribution function of the random variable over a given probability space. Under this framework we apply the finite formulation for assessing the expected value of the severity of a finite number of DG scenarios (samples) having a given cumulative frequency (F) for a given severity (S) over the frequency domain. The curves composed by [F; S] couples over the considered samples is called the F/S curve. It is also known as F/N curve when applied to the estimation of expected human fatalities.