This paper illustrates how the interval computations can be used in analysis of the important project risks.
In Step 3-6, we calculate IRS for the important risks. There are twelve important risks and two main
criteria. To increase accuracy, interval numbers from the bootstrap are used to describe and treat the
uncertainty of the risk ranking. The interval numbers of P and I criteria for the important risks are
considered based on 250-resample illustrated in Table 7. The IRS for each risk is calculated using
Equation (1). In order to rank these important risks, the comparison of interval numbers is conducted