The Beta distribution is useful in network analysis because it ________.
A) provides formulas for calculating the activity mean and variance
B) can be approximated by a normal distribution
C) provides probability estimates for project completion time
D) requires only three time estimates to describe uncertain activity duration

Question

Quizplus · Accepted Answer

The Beta distribution provides formulas for calculating the activity mean and variance, making it useful in network analysis. So, option A is the correct answer. Option B is not correct because the Beta distribution cannot be approximated by a normal distribution. Option C is not correct because the Beta distribution provides probability estimates for the distribution of a random variable that falls between zero and one (such as the probability of success in a binary experiment), not necessarily project completion time. Option D is not correct because the number of time estimates required to describe uncertain activity duration depends on the specific method used to describe time estimates, and it is not related to the distribution used to model uncertainty.

The Beta Distribution Is Useful in Network Analysis Because It