In order to calculate probabilities of the occurrence of dependent risks, the
conditional probability of each child risk needs to be calculated (the
probability of occurrence of the child risk given that its parent risk has
occurred: P(Effect risk | Cause risk)), this can be done by specifying number
of occurrences of child risks when they occur in combination with their
parents and divide them by the number ofoccurrences of their causing risks in
all projects, the denominator will represent child risks sample space for
probability calculation