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
either one of the groups
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "either one of the groups" is not correct in standard English usage.
The correct expression should be "either group" or "either one of the two groups." Example: "You can choose either group for the project, as both have their own strengths."
⚠ May contain grammatical issues
Science
News & Media
Academia
Alternative expressions(3)
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
The extinct species are plotted separately in the same scale in order to visualize membership to either one of the groups.
Science
Similar improvements were reported after the 8-week intervention period with no long-term improvement in either one of the groups.
We used the results from our localizer experiment (i.e. experience) to select voxels that were significantly activated by at least one of our stimuli by either one of the groups (Fig. 2, red transparent regions).
Science
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
Our principal finding is that the activation of either one of the Group I mGluRs (mGlu1 or mGlu5) or a KAR is sufficient for the induction of MF-LTP in anesthetized rats.
Science
This step is repeated until all nodes are connected to either one of the created groups.
Conversely, patients with discriminant scores around 0 exhibited a significant degree of morphological similarity and therefore could not be clearly classified to either one of the two groups.
Science
Each patient will be allocated to either one of the three groups using a computer-generated random number sequence.
Science
The practices will be stratified into groups of 3 per size and randomised by an independent person into either one of the two intervention groups or the control group by numbering sealed envelopes which contain the names of the practices.
Science
There was no differential association with either one of the three gene groups for the intervals tested (Additional File 5).
Science
Participants will be randomly assigned to either one of the two treatment groups: standard care (control) or standard care plus brief education (intervention).
Science
Within this cohort, 573 patients satisfied the inclusion criteria and were assigned to either one of the two infection category groups, acute GBS UTI or ABU.
Science
Expert writing Tips
Best practice
When referring to a choice between two groups, use "either group" or "either of the two groups" for grammatical correctness.
Common error
Avoid using the phrase "either one of the groups" because it contains unnecessary repetition. Instead, choose the more concise and grammatically accurate "either group" or "either of the groups".
Source & Trust
84%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase is intended to function as a determiner followed by a prepositional phrase, specifying a selection from a set of groups. However, according to Ludwig AI, its grammatical structure is flawed. This means that while its intent is clear, the wording can be improved for correctness and clarity.
Frequent in
Science
60%
News & Media
20%
Academia
20%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, while the phrase "either one of the groups" is frequently used across various contexts including science, news, and academia, it is considered grammatically incorrect. As noted by Ludwig AI, better alternatives include ""either group"" or ""either of the groups"". When writing, especially in formal or scientific contexts, it's best to opt for the grammatically correct alternatives to ensure clarity and precision. The key is to avoid redundancy and maintain grammatical accuracy while conveying the intended meaning of choosing one group from a set of options.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
either group
This is a shortened, more direct way of expressing the same idea.
either of the groups
This alternative is grammatically sound and widely accepted.
any one of the groups
This phrase broadens the selection beyond just two groups.
one of the groups
This alternative focuses on a single group without specifying a choice between two.
any group
Simplifies the selection to any group without restriction.
one group or another
This emphasizes the choice between different groups.
a group
This refers to any group, without specifying a particular selection.
each group
This refers to all groups individually.
a given group
This refers to one specific group pre-defined in some context.
any of these groups
Focuses on a specific selection of known groups.
FAQs
Is "either one of the groups" grammatically correct?
No, while commonly used, "either one of the groups" is grammatically incorrect. The correct alternatives are "either group" or "either of the groups".
What's a better way to say "either one of the groups"?
Consider using alternatives like "either group", "either of the groups", or "any one of the groups" depending on the context.
How do I use "either group" in a sentence?
Example: "You can select "either group" for the presentation; both are well-prepared."
When should I use "any one of the groups" instead of "either group"?
Use "any one of the groups" when you are selecting from more than two options. Use "either group" when you are selecting one from just two options.
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
84%
Authority and reliability
2.8/5
Expert rating
Real-world application tested