Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
an essential data
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "an essential data" is not correct in standard written English.
The word "data" is typically treated as a plural noun in formal contexts, so it should be preceded by "essential" without the article "an." Example: "The researchers emphasized that essential data is crucial for the success of the project."
⚠ May contain grammatical issues
Science
Academia
News & Media
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
3 human-written examples
Heat exchanges occurring between the electronic assemblies and their environment are an essential data in order to control their temperature, enhance their performance and improve their reliability.
Science
Additionally, the MapReduce model is defined with respect to an essential data structure: the <key,value> pair.
Although relative permeability is an essential data for simulation of flow in fractured media, few attempts have so far been made to estimate the relative permeability curves.
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
The simple omission of a few essential data makes impossible any valid analysis from the data for the 20,325 individual respondents.
In addition to documenting a minimal essential data set, acquisition and storage of blood samples, and skin biopsies from patients with SSc after SCT are strongly encouraged in expert centres (Table 4).
Science
This is an excellent entry level opportunity for anyone who enjoys managing large sets of data and/or files, working with colleagues across an organization, preserving essential data and library collections, and learning new technical skills.
Academia
"Yseop would produce an outline or a first draft containing essential data and accurate figures," he suggests.
News & Media
A simple intelligence test, combined with a structured interview, will provide the essential data for a vastly improved hiring process.
One attraction of meta-analysis is the forest plot, a compact overview of the essential data included in a systematic review and the overall 'result'result
The surface roughness, the dimensional tolerance and the material of a mechanical part are essential data, influencing the behaviour and the mechanism lifetime.
Essential data (A l and S l ) are output in the analysis stage.
Expert writing Tips
Best practice
When referring to "data", use the plural form. Instead of "an essential data", use "essential data" or "essential pieces of data".
Common error
Avoid using the indefinite article "an" before "essential data". "Data" is generally treated as plural, so the correct form is "essential data".
Source & Trust
81%
Authority and reliability
3.2/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "an essential data" functions as a noun phrase attempting to describe information that is considered crucial. However, due to a grammatical error, as shown by Ludwig AI, this phrase isn't used correctly.
Frequent in
Science
35%
Academia
30%
News & Media
20%
Less common in
Formal & Business
5%
Wiki
5%
Encyclopedias
5%
Ludwig's WRAP-UP
In summary, the phrase "an essential data" is grammatically incorrect in standard English. As Ludwig AI points out, "data" should generally be treated as a plural noun, requiring the phrase to be "essential data" without the article "an". Although this exact phrasing appears infrequently, the intention is to highlight the critical nature of the data being referenced. When writing, it's best to use "essential data" or consider alternatives like "key data" or "vital data" to ensure grammatical accuracy and clarity.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
essential information
Replaces "data" with "information", a more commonly used term in general contexts.
key data
Uses "key" as a synonym for "essential", indicating importance.
vital data
Substitutes "essential" with "vital", emphasizing the critical nature of the data.
critical data
Replaces "essential" with "critical", highlighting the data's importance to a decision or outcome.
necessary data
Uses "necessary" as a direct synonym for "essential", focusing on requirement.
required data
Indicates that the data is mandatory or needed.
fundamental data
Highlights the data's role as a base or foundation.
indispensable data
Emphasizes that the data is absolutely necessary and cannot be done without.
crucial data
Stresses the importance of the data for success or avoidance of failure.
significant data
Indicates that the data is important or noteworthy.
FAQs
How do I correctly use the term "essential data" in a sentence?
Always treat "data" as a plural noun. Instead of saying "an essential data", say "essential data is needed" or "these essential data points are crucial".
What is a better way to phrase "an essential data"?
Consider using terms like "essential information", "key data", or "vital data" to convey the same meaning with better grammatical accuracy.
Is it grammatically correct to say "an essential data"?
No, it is not grammatically correct. The word "data" is generally considered plural. The correct phrasing is simply "essential data".
What's the difference between "essential data" and "essential information"?
While both refer to crucial details, "data" implies a collection of facts or figures, while "essential information" is broader and includes knowledge derived from those facts.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
81%
Authority and reliability
3.2/5
Expert rating
Real-world application tested