Branch Expected Times - PERT: Expected Project Time, Step by Step

Each branch activity gets its own exact expected time.

highlighted = computed this step

B expected time

B's expected time is 3.

E_B=3

C's expected time is 7/3. Interpretation: this branch has a fractional expected activity time.

E_C=7/3

D's three estimates are equal, so its expected time is 2.

E_D=2

These are activity expected times, not promised calendar durations.

\text{expected activity times only}