The following PMP® exam sample question is taken from http://www.free-pm-exam-questions.com<http://www.linkedin.com/redirect?url=http%3A%2F%2Fwww%2Efree-pm-exam-questions%2Ecom&urlhash=Juw9&_t=tracking_anet>- The answer is at the bottom:
------------------------------ 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<http://www.linkedin.com/redirect?url=http%3A%2F%2Fwww%2Efree-pm-exam-questions%2Ecom&urlhash=Juw9&_t=tracking_anet>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<http://www.linkedin.com/redirect?url=http%3A%2F%2Fwww%2Eproject-management-prepcast%2Ecom&urlhash=U9sZ&_t=tracking_anet> The Project Management Podcast™ - http://www.project-management-podcast.com<http://www.linkedin.com/redirect?url=http%3A%2F%2Fwww%2Eproject-management-podcast%2Ecom&urlhash=lkMj&_t=tracking_anet> 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 -- You received this message because you are subscribed to the Google Groups "project managment" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/project-managment?hl=en.
