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
internal variation
Grammar usage guide and real-world examplesUSAGE SUMMARY
"internal variation" is a valid phrase to use in written English.
It refers to changes or differences that occur within a particular system, structure, or group. It can be used in various contexts, such as language, genetics, and culture. For example, "The study of internal variation in the English language reveals how regional dialects have evolved over time." This sentence means that examining the changes within the English language can provide insights into the development of regional dialects. Another example could be, "The internal variation among individuals within the same family can lead to unique genetic traits." This sentence highlights how differences within a family can result in individual characteristics that are not shared with others.
✓ Grammatically correct
Science
News & Media
Academia
Alternative expressions(1)
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
55 human-written examples
The data disguise massive internal variation, from Spain's 24.3 percent down to Austria's 3.9 percent.
News & Media
Samples were chosen to include the widest possible range of haplogroup R1a-M582 internal variation based on their previously available short tandem repeat (STR) haplotypes (Supplemental Table S2).
Science & Research
Regional dialects do have some internal variation, but the differences within a regional dialect are supposedly smaller than differences between two regional dialects of the same rank.
Encyclopedias
Using internal variation in the early years of the Spanish Inquisition (1486-1502) and Romanov Russia (1613-1649), I demonstrate the differing effects of each model on patterns of denunciations.
Academia
With style disappeared the semicolon, the colon and dashes, for reasons very different from, say, why Joyce jettisoned punctuation in his so-called stream-of-consciousness flood of words and references – and the long sentence full of internal variation also became rarer.
News & Media
Third, the internal variation in the plane direction reaches above 10 °C under adiabatic 1.5 C discharge, much larger than in the through-plane direction, indicating the in-plane heat conductivity needs improvement.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
5 human-written examples
These are only rough categories, however, with strong internal variations.
Academia
This research highlights internal variations within companies and the drivers for involvement in charitable activities by those at the top and bottom of the workplace ladder.
News & Media
As with the narrative, the musical score endures both regional and internal variations, Wong variously shifting from cues by Shigeru Umebayashi and Nathaniel Méchaly to Stefano Lentini's Stabat Mater and Ennio Morricone's La Donna Romantica and (notably) Deborah's Theme from Once Upon a Time in America.
News & Media
Outside this region, composition control can compensate for external disturbances such as feed flow rate and feed composition changes but not changes in operating region caused by internal variations such as liquid and vapor splits.
Science
We observe that real systems usually exhibit internal variations or are submitted to external perturbations.
Expert writing Tips
Best practice
When discussing "internal variation", clearly define the boundaries of the system or group you are analyzing to provide context for the differences you are describing.
Common error
Avoid using "internal variation" when you are actually referring to differences between separate entities or systems. "Internal variation" specifically refers to differences within a single defined entity.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "internal variation" functions primarily as a noun phrase. It denotes the degree of diversity, differences, or fluctuations present within a specific entity, system, or group. Ludwig AI examples demonstrate its use across various domains to describe heterogeneity within a defined scope.
Frequent in
Science
64%
News & Media
12%
Academia
8%
Less common in
Encyclopedias
2%
Formal & Business
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "internal variation" is a grammatically sound and frequently used phrase that describes the extent of diversity within a defined entity or system. Ludwig AI confirms its wide applicability across various contexts, particularly in science, news, and academia. When using this phrase, it's important to clearly define the system you're analyzing and to avoid confusing internal with external differences. Consider using alternatives such as "intrinsic variability" or "within-group differences" for nuanced meanings. Understanding the best practices and common errors associated with "internal variation" can enhance the clarity and precision of your writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
intrinsic variability
Focuses on inherent differences rather than general changes.
inherent diversity
Highlights the variety of elements as a natural attribute.
within-group differences
Specifically points to differences among members of a group.
intra-group variability
A more technical term for differences within a group.
component differentiation
Emphasizes how parts of a whole become distinct.
internal heterogeneity
Highlights the lack of uniformity within something.
in-system fluctuations
Suggests changes happening inside a system over time.
endogenous modifications
Focuses on alterations that originate from within.
structural differences
Highlights the dissimilarities in the structure of something.
inner disparities
Emphasizes inequalities or contrasts found internally.
FAQs
How is "internal variation" used in scientific research?
In scientific research, "internal variation" is used to describe the diversity or range of differences observed within a specific group, sample, or system. For example, scientists might study the /s/genetic+diversity within a population or the differences in gene expression among cells in a tissue.
What's the difference between "internal variation" and "external variation"?
"Internal variation" refers to the differences or diversity found within a single defined entity or system. "External variation", on the other hand, refers to the differences observed between separate and distinct entities or systems.
What are some other terms that can be used instead of "internal variation"?
Depending on the context, you can use alternatives like "intrinsic variability", "within-group differences", or "internal heterogeneity" to express a similar meaning to "internal variation".
How does "internal variation" affect statistical analysis?
In statistical analysis, "internal variation" is a factor that must be considered when interpreting data. High levels of /s/internal+variability can make it more difficult to detect significant differences between groups or to draw conclusions about the overall population.
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
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested