Question

Which one of the following distributions provides information regarding the uncertainty of duration time estimates is PERT described network?
1. Beta-distribution
2. Normal distribution
3. Poisson distribution
4. Binomial distribution

Answer 1

Correct Answer - Option 1 : Beta-distribution

PERT described networks are based upon three-time estimates namely ‘pessimistic time’, ‘optimistic time’ and ‘most likely time’. Three-time estimates are needed when the conditions are uncertain and one-time estimate is not enough. These three-time estimates are incorporated by the Beta distribution.