How is uncertainty defined?
Risk Calc allows you to specify uncertainty in several ways. You can enter variables as scalars with no uncertainty, such as A = 5, or with ranges as interval uncertainty, such as B = [2,6]. Alternatively, you can represent uncertainty as a range along with a single best estimate, such as C = [2,3,6], or as a range along with a best estimate expressed as a range, such as D = [2,2.5,3,6], or something more complex. You can also specify a probability distribution like E = normal(5,1) or bounds on one when parameters are uncertain like F = pareto([60,80], [15,25]), or even distribution-free bounds like G = minmaxmean (0,1,0.3) which represents all possible distributions whose range is [0,1] and whose mean is 0.3. You can also specify units to accompany any of these numeric quantities, for example, density=[1,2,4] g per cm or length=[8 ft, 6 m].
