PMI-SP Time Estimating & Resource Allocation 3

Question 1

An activity has an optimistic estimate of 3 days, a pessimistic estimate of 15 days, and a most likely estimate of 6 days. What is the PERT expected duration?

Accepted Answer

7 days

Answer

PERT = (3 + 4×6 + 15) / 6 = (3 + 24 + 15) / 6 = 42 / 6 = 7 days.

Question 2

What does a resource histogram primarily display?

Accepted Answer

The amount of work planned for a resource over time

Answer

A resource histogram is a bar chart showing the quantity of resource usage over the project timeline, making over-allocations visually apparent.

Question 3

Which technique reassigns non-critical tasks to off-peak periods to smooth resource demand without changing the project end date?

Accepted Answer

Resource smoothing

Answer

Resource smoothing adjusts activities within their available float to reduce peak resource demand while keeping the project finish date unchanged.

Question 4

A PMI-SP candidate needs to estimate effort for writing 50 test cases. Historical data shows a senior tester writes 5 test cases per day. What estimating technique uses this productivity rate?

Accepted Answer

Parametric estimating

Answer

Parametric estimating multiplies a unit productivity rate (5 test cases/day) by the quantity (50 test cases) to derive the effort estimate.

Question 5

When a project has a fixed end date and insufficient resources, which strategy is MOST appropriate?

Accepted Answer

Add resources to critical path activities

Answer

Adding resources to critical path activities (crashing) can compress the schedule to meet a fixed end date when resources are the constraint.

(PMI-SP) PMI Scheduling Professional Practice Test

(PMI-SP) PMI Scheduling Professional Practice Test

PMI-SP Time Estimating & Resource Allocation 3