PM Test Center

Which of the following estimating types provides the least accuracy?

A. Analogous
B. Engineering
C. Bottom-up
D. Grass roots

Answer: A. Analogous
Analogous is a top-down estimate. It usually only takes a short period of time to estimate since it is based on historical information and expert judgment. As a result, it generally produces less accurate outputs when compared to the others on the list, which provide estimates at the greatest level of detail.

If EV = 25,000, PV = 30,000, and AC = 29,000, what is the SV?

A. -5,000
B. -1,000
C. 1,000
D. 5,000

Answer: A. -5,000
SV (Schedule Variance) is calculated by EV (Earned Value) – PV (Planned Value). The -5,000 means that the project is behind schedule.

Which of the following estimating types takes the least amount of time to prepare?

A. Analogous
B. Parametric
C. Engineering
D. Bottom up

Answer: B. Parametric
Parametric, also known as rough order of magnitude, is very quick since it is simply estimating a part of the project and scaling it. For instance, if it is estimated to take 8 hours and $1000 to do paint a room, then the estimate for painting eight rooms of similar size would take 64 hours and $8000.

__________ is an activity sequencing technique that uses arrows to represent activities.

A. Critical chain method
B. Activity-on-Arrow (AOA)
C. Activity-on-Node (AON)
D. Precedence Diagramming Method (PDM)

Answer: B. Activity-on-Arrow (AOA)
In an AOA, activities are arrows and nodes are used to connect them.

__________ is an activity sequencing technique that uses nodes to represent activities.

A. Project management software
B. Activity-on-Arrow (AOA)
C. Precedence Diagramming Method (PDM)
D. Critical chain method

Answer: C. Precedence Diagramming Method (PDM)
In a PDM, also known as AON, activities are nodes and arrows are used to show relationships.

As the project manager with a time conscience sponsor, you have been monitoring earned value throughout the year long project. At the halfway point, you report that the SPI is 0.8. This means that the project is:

A. Ahead of schedule
B. Under budget
C. Behind schedule
D. Over budget

Answer: C. Behind schedule
The Schedule Performance Index (SPI) determines how much ahead or behind schedule you are. An SPI of 1.0 means you are on target. Therefore, an SPI of 1.5 means that you are progressing at 150% of the baseline, which is a good thing. Conversely, an SPI of 0.8 represents only moving at 80% of the baseline, not so good. In short, over 1.0 is good, under 1.0 is bad.

For your new software project, you decide you need to use a Graphical Evaluation and Review Technique (GERT) network diagram. When asked by an intern why you chose to use GERT, you explain that one of the main advantages is that you can:

A. Be more accurate than using a PERT
B. Use hammock activities
C. Assign multiple resources
D. Create loops between tasks

Answer: D. Create loops between tasks
GERT allows for conditions or loops between tasks. For projects with iterative tasks, GERT will often tell a better story.

Resource leveling typically results in a:

A. Project cost overrun
B. Project cost savings
C. Project duration longer than the baseline
D. Project duration shorter than the baseline

Answer: C. Project duration longer than the baseline
When resource leveling, work scheduled for resources that are over-allocated will be spread over a longer period of time. As a result, this smoothing out process will usually cause the project to take longer.

While reviewing your weekly report, you notice that two of your resources are over-allocated. One way to solve this is to:

A. Level resources
B. Use PERT
C. Add lag
D. Crash the schedule

Answer: A. Level resources
Of the choices, only leveling resources is the only method that will relieve over-allocated resources. Leveling will take the extra work and move it to a different date so the resources will not exceed their maximum per day.

You plan on using a project management information system (PMIS) to develop a Gantt chart. One drawback of using a Gantt chart is:

A. Finish dates for each project cannot be manually set
B. WBS outline cannot be represented
C. Relationships between tasks are not displayed
D. Only one resource can be assigned to a task

Answer: C. Relationships between tasks are not displayed
Although some PMIS tools do show relationships between tasks (e.g. Microsoft Project), traditionally, Gantt charts do not display them.