Risk Severity Algorithm

In automatic mode, the Matrix Designer defines the risk matrix zones using the algorithm

            Risk Severity  =  Probability Level  +  N * Impact

where Probability Level is an integer (1, 2, 3 ...) representing probability and N is a numerical constant. The value of N is controlled via the up/down arrows in the box immediately above the matrix on the Matrix Designer form.

A risk severity value is calculated for every value of impact and probability level. For example, if N = 2,  severity values from 3 to 15 will result for a 5x5 matrix. Matrix zones are then defined by dividing this range into equal, or nearly equal groups. In this case, the zone definitions are:

         Red zone        12-15

         Yellow zone      8-11

         Green zone       3-7

resulting in the matrix shown below: