## What is the order of magnitude budget for this project?

The short answer is: Rough order of magnitude (ROM) refers to an initial estimate of the cost of a project or parts of a project. It has an expected accuracy of -25% to +75% according to the PMBOK (other sources suggest -50% to +50%).

## When budgeting a project What is an order of magnitude cost estimate what is the purpose of making such an estimate?

A rough order of magnitude estimate is used to give you a very high level view of potential project costs. Ideally, you’d be able to provide a definitive estimate, carefully created from loads of input from subject matter experts and plenty of research on past projects and their budgets.

What is a ROM budget?

A ROM Cost is a general approximation of the cost of providing a stated service. It is based on experience, costs of similar services, or on a cursory examination of other vendor’s rates. A ROM Cost is usually provided to a Customer who is seeking general information.

What does ROM mean in contracting?

Rough orders of magnitude
Rough orders of magnitude (ROM) are quick and broad cost estimates that are typically completed when few details exist on a Government requirement. They help the Government to develop its own cost estimates. There should be no issue asking an existing contractor for an ROM for similar work.

### How do you present a rough order of magnitude estimate?

A Rough Order of Magnitude is the initial estimate that is often done before a project is started. The Project Management Body of Knowledge (PMBOK) suggests that the ROM estimate should have an accuracy of – 25 percent to + 75 percent.

### What is the range of an order of magnitude ROM estimate?

-25 percent to +75 percent
Rough Order of Magnitude Estimate: -25 percent to +75 percent. Budget Estimate: -10 percent to +25 percent. Definitive Estimate: -5 percent to +10 percent.

What does a rough order of magnitude look like?

What is an order of magnitude estimate physics?

The order of magnitude of a physical quantity is its magnitude in powers of ten when the physical quantity is expressed in powers of ten with one digit to the left of the decimal. Orders of magnitude are generally used to make very approximate comparisons and reflect very large differences.

## What is an order of magnitude example?

Explanations (2) The order of magnitude is the power of 10 a number is raised to when it’s in scientific notation. For example, the order of magnitude for 19,400 would be 4. This is because when we convert it into scientific notation, 1.94×104, the 10 is being raised to the 4th power.

## What is the order of magnitude of 6400 km?

Answer. if the radius of the earth is 6400 km then what is the order of the magnitude of the radius of the earth… answer : 10^7 m is the order of magnitude of the radius of the earth.