# Free PMP Exam Sample Question

The following PMP® exam sample question is taken from http://www.free-pm-exam-questions.com - The answer is at the bottom:

On Friday March 25, 2011 we will be launching a new PMP Exam Simulator at http://www.pm-exam-simulator.com. Sign up to our launch newsletter and you will receive a 20% discount.

------------------------------

PMBOK Section: Estimate Costs
Process Group: Planning Process Group
Question Type: Calculation
Knowledge Area: Cost Management
Difficulty Level: Hard

Question: You are managing an amusement park development project. You have received the following estimates for site excavation and area development activity that is critical to the success of your project. The most likely estimate is \$100,000, the optimistic estimate is \$90,000, and the pessimistic estimate is \$120,000. What is the variance of this data?

A. 25000000
B. 5000
C. 30000
D. 105000

Hint: Calculate the standard deviation using the PERT method and then calculate variance from it.

------------------------------

All our free questions are updated to the latest PMBOK® Guide standard. Stop by at http://www.free-pm-exam-questions.com to receive the questions via email. We are a PMI Registered Education Provider.

Until next time,
Cornelius Fichtner, PMP
The Project Management PrepCast™ - http://www.project-management-prepcast.com
The Project Management Podcast™ - http://www.project-management-podcast.com

Explanation: Standard deviation can be calculated as (Pessimistic - Optimistic) / 6. Variance can be calculated by squaring the standard deviation. For the given data, the variance is \$25,000,000 and the standard deviation is \$5,000. Hence choice A is the correct answer. Reference: PMP Study Guide 5ed - Sybex - pg:170