rough approximation

USAGE SUMMARY

"rough approximation" is a correct and usable phrase in written English.
It means an estimate or guess that is not exact or precise. Example: The engineer gave us a rough approximation of how long the project would take, but it ended up taking much longer.

✓ Grammatically correct

News & Media

Academia

Science

Encyclopedias

Wiki

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Monday's presidential debate provided a rough approximation of this experiment.

The New York Times

At best, there could be only a rough approximation.

Cornell University

It is, however, only a starting point, a rough approximation.

Harvard University

We are heavily socialised to make a kind of rough approximation between cause and effect.

The Guardian - Books

On a theoretical level, it can be, at best, a rough approximation.

The New Yorker

But as a rough approximation, it does give you an idea what most places are experiencing.

The Washington Post

'The placement corresponds in some rough approximation to brain areas that are underneath the scalp".

The New York Times - Tech

Where else should people turn for some rough approximation to the truth?

The Guardian - Opinion

This one is very fast, but uses a relatively rough approximation mesh.

University of California, Berkeley

A rough approximation for extracting RDF out of an arbitrary character stream.

Stanford University

To a rough approximation, gases diffuse about 100,000 times faster than do liquids.

Encyclopedia Britannica

Expert writing Tips

Best practice

To enhance clarity, specify the basis or method used for the "rough approximation", such as "based on available data" or "using a simplified model".

Common error

Avoid treating a "rough approximation" as a precise figure. Always acknowledge its inherent limitations and potential for significant deviation from actual values.

Linguistic Context

The phrase "rough approximation" primarily functions as a noun phrase, often serving as a subject or object in a sentence. Ludwig shows its common use to indicate an imprecise or preliminary estimate, acknowledging that a more exact value is not readily available or necessary.

Expression frequency: Very common

Frequent in

News & Media

34%

Academia

28%

Science

26%

Less common in

Encyclopedias

6%

Wiki

3%

Formal & Business

3%

Ludwig's WRAP-UP

In summary, "rough approximation" is a common and grammatically sound noun phrase used to describe an estimate that is not precise. As Ludwig AI confirms, it's versatile enough for both formal and informal contexts, though its use is concentrated in news, academic, and scientific domains. When using this phrase, be sure to clearly define the expected level of precision and the basis for the estimation to avoid misunderstandings. Alternatives such as "crude estimate" or "ballpark figure" may be more appropriate depending on the context. Remember that it's important never to assume undue accuracy and to acknowledge its limitations.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

approximate calculation

More focus on calculation which is approximate.

basic estimation

Focuses on the fundamental and uncomplicated nature of the estimation.

crude estimate

Implies a lack of precision and sophistication in the estimation method.

ballpark figure

Suggests a very general and imprecise estimation, often used in informal settings.

guesstimate

Combines a guess and an estimate, indicating a higher degree of uncertainty.

back-of-the-envelope calculation

Highlights the informality and quick nature of the calculation.

order-of-magnitude estimate

Focuses on the power of ten, providing a very broad estimation suitable for scientific contexts.

preliminary calculation

Suggests an initial calculation that may be refined later.

tentative assessment

Emphasizes the provisional nature of the assessment, subject to change with more information.

cursory evaluation

Indicates a brief and superficial evaluation, lacking depth.

FAQs

How can I use "rough approximation" in a sentence?

You can use "rough approximation" to describe an estimate that isn't exact. For example: "The engineer provided a "rough approximation" of the project's cost."

What's a simpler way to say "rough approximation"?

Alternatives include "crude estimate", "ballpark figure", or "guesstimate". The best choice depends on the context and desired level of formality.

Is "rough estimate" the same as "rough approximation"?

While similar, "rough estimate" is slightly more general. "Rough approximation" often implies a calculation or model, while "rough estimate" can be based on intuition or incomplete data.

When is it appropriate to use a "rough approximation"?

It is appropriate when precise data is unavailable, or when a quick, high-level understanding is sufficient. However, always acknowledge the limitations of the approximation.