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Effort Estimation Model for Project Management

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Effort Estimation Model for Project Management

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Questions and Answers

What is a disadvantage of the top-down approach for effort estimation?

It relies on accurate size estimation of the project. (correct)

It underestimates the effort needed for smaller tasks.

It is time-consuming to implement.

It requires detailed information about the project.

What is a risk associated with the bottom-up approach for effort estimation?

Difficulty in partitioning the project into smaller tasks.

Overestimation of the effort needed for small tasks.

Omitting important activities from specific tasks. (correct)

Lack of historical data for comparison.

How does the bottom-up estimation approach differ from the top-down approach?

It focuses on task-level estimation first. (correct)

It involves categorizing tasks by complexity.

It requires accurate size estimation upfront.

It is more suitable for smaller projects.

In the bottom-up estimation approach, how are major system modules classified?

By their complexity level. Signup and view all the answers

What is a potential drawback of using historical data to estimate coding efforts for classified units?

Inaccuracy due to rapidly changing technology. Signup and view all the answers

Why might a bottom-up estimation approach be preferred in commercial organizations?

To leverage past system development experiences. Signup and view all the answers

According to the COCOMO model, what percentage of estimates are within a factor of 1.3?

29% Signup and view all the answers

For a software project with 30,000 lines of code using the semi-detached mode, what is the estimated effort in person-months?

135 person-months Signup and view all the answers

What is the estimated duration in months for the 30,000 line of code software project in semi-detached mode?

14 months Signup and view all the answers

What is the estimated number of persons required for the 30,000 line of code software project in semi-detached mode?

10 Signup and view all the answers

What is the purpose of the Intermediate COCOMO model?

To compute the effort using cost driver attributes Signup and view all the answers

Which of the following is true about effort estimation at the end of a project?

It is more accurate as complete knowledge of the project is gained Signup and view all the answers

What is the input for the effort estimation model?

The characteristics of the project Signup and view all the answers

According to the COCOMO model, what is the relationship between the effort and the size of the project?

Effort = a * SIZE^b Signup and view all the answers

Based on the observations of Watson and Felix, what are the values of the constants a and b in the COCOMO model?

a = 5.2, b = 0.91 Signup and view all the answers

What is the unit used to measure effort in the COCOMO model?

Person-Months (PM) Signup and view all the answers

What is the approach of obtaining the effort from the size of the project called?

Top-down approach Signup and view all the answers