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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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by how much do they differ

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "by how much do they differ" is correct and usable in written English.
It can be used when asking for the extent or degree of difference between two or more items, concepts, or values. Example: "In the study, we need to analyze the results and determine by how much do they differ from the previous findings."

✓ Grammatically correct

Science

News & Media

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

1 human-written examples

If so then it is interesting to check if current charges are close to the optimal one, and if not then why and by how much do they differ?

Human-verified similar examples from authoritative sources

Similar Expressions

59 human-written examples

How much do they help?

This unfortunately still leaves unanswered the question: by how much do administration costs differ between biologics given intravenously, subcutaneously or intramuscularly?

How much did they fall by?

News & Media

The New Yorker

By how much does it vary?

How do they differ?

News & Media

The New York Times

So how do they differ?

Really, how do they differ from catalogues?

How do they differ from mainstream schools?

News & Media

The Guardian

How do they differ from standard tours?

News & Media

Forbes

How do they differ from Millennials?

News & Media

Huffington Post
Show more...

Expert writing Tips

Best practice

When using the phrase "by how much do they differ", ensure you clearly define the entities being compared and the units of measurement for the difference. This provides context and clarity for the reader.

Common error

Avoid using "by how much do they differ" without specifying what aspect is being compared. For instance, instead of saying "the two products differ", clarify with "by how much do their prices differ?"

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

87%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "by how much do they differ" functions as an interrogative phrase used to solicit information regarding the magnitude or extent of the difference between two or more entities. As seen in Ludwig, this phrase seeks to quantify the variance. Ludwig AI affirms the grammatical correctness of the phrase.

Expression frequency: Uncommon

Frequent in

Science

30%

News & Media

30%

Formal & Business

20%

Less common in

Academia

10%

Wiki

5%

Encyclopedias

5%

Ludwig's WRAP-UP

The phrase "by how much do they differ" serves to request the degree of difference between two or more subjects. According to Ludwig, this phrase is grammatically correct and can be used effectively in writing. It's most commonly found in scientific, news-related and professional contexts and aims to quantify the variance between the subjects of comparison. When using this phrase, ensure that the items being compared and the measurement units are well-defined to provide clarity. Alternatives include "what is the magnitude of their difference" or simply "how do they differ".

FAQs

How can I rephrase "by how much do they differ" to sound more formal?

In formal contexts, you could use phrases like "to what extent do they vary?", "what is the magnitude of their difference?", or "how significant is the disparity between them?" These alternatives offer a more sophisticated tone.

What's a simpler way to ask "by how much do they differ"?

For simpler alternatives, consider "what is the difference?" or "how much do they vary?" These options are more direct and easier to understand.

Is it always necessary to quantify the difference when using "by how much do they differ"?

While not always mandatory, quantifying the difference provides valuable context and clarity. If precision isn't crucial, focus on highlighting the key distinctions instead. You could also use the phrase "how do they differ".

Which is more appropriate, "by how much do they differ" or "how are they different"?

While both are grammatically sound, "by how much do they differ" is used to emphasize the quantitative aspect of the difference, while "how are they different" focuses on the qualitative aspects.

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Source & Trust

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Authority and reliability

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Expert rating

Real-world application tested

Most frequent sentences: