The normal distribution tends to be a better approximation of the distribution of total time for shorter projects where the critical path has relatively few activities.

Question

Quizplus · Accepted Answer

The normal distribution tends to be a better approximation for longer projects where the central limit theorem applies, as the aggregation of many small, independent random variables (activities) tends to produce a normal distribution, not for shorter projects with fewer activities.

The Normal Distribution Tends to Be a Better Approximation of the Distribution