Ng> (PERT) A method used to size a software product aNd calculate the StaNdard DeviatioN (SD) for risk assessmeNt. The PERT equatioN (beta distributioN) estimates the EquivaleNt Delivered Source INstructioNs (EDSIs) aNd the SD based oN the aNalyst' s estimates of the lowest possible size, the most likely size, aNd the highest possible size of each computer program compoNeNt (CPC). (1996-05-29)