a perfect correlation

USAGE SUMMARY

The phrase "a perfect correlation" is correct and usable in written English.
It can be used in contexts where you want to describe a situation in which two variables are related in a way that one can predict the other with complete accuracy. Example: "The study found a perfect correlation between the amount of exercise and overall health, indicating that more physical activity leads to better health outcomes."

✓ Grammatically correct

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

It need not be a perfect correlation.

The Economist

This is not huge (a perfect correlation is 1.0).

The Economist

In reality, there was never a perfect correlation between the action and the event.

The New Yorker

(A perfect correlation is 1; 0.2 is considered "negligible," while 0.4 is "low").

The New Yorker

"There is a perfect correlation: the more ads aired, the more phone calls placed, the more money spent".

The New York Times

The models proposed here demonstrate a perfect correlation among variables and responses.

Cement and Concrete Composites

By this measure, a reading of plus 1 is a perfect correlation between the two markets and a minus 1 is a perfect inverse correlation.

The New York Times

Holmes strongly disagrees: "We have data that show you can get a perfect correlation between a finger stick and a venipuncture for every test that we run".

The New Yorker

When statisticians measure correlations, a "1" is a perfect correlation between two trends, while a "minus 1" is a perfect inverse correlation.

The New York Times

"It's close to a perfect correlation between who is committing crime and who is being stopped," Celeste Koeleveld, the deputy Corporation Counsel who is supervising the defense, said.

The New Yorker

Such in situ coupling of electrochemistry and acoustic emission shows a perfect correlation between the two signals.

Electrochimica Acta

Expert writing Tips

Best practice

When using "a perfect correlation", ensure that the data genuinely supports such a strong claim. Consider the potential for confounding variables or limitations in the study design that might weaken the association.

Common error

Avoid claiming "a perfect correlation" when the data only shows a strong, but not absolute, relationship. Using terms like "strong correlation" or "high degree of association" may be more accurate and avoid exaggeration.

Linguistic Context

The phrase "a perfect correlation" functions as a noun phrase, often serving as the subject or object of a sentence. It describes a very strong and precise relationship between two or more variables. Ludwig provides examples showing its usage in scientific and news contexts.

Expression frequency: Very common

Frequent in

Science

62%

News & Media

36%

Formal & Business

2%

Less common in

Encyclopedias

0%

Wiki

0%

Reference

0%

Ludwig's WRAP-UP

In summary, "a perfect correlation" is a noun phrase indicating an absolute, direct relationship between variables. According to Ludwig, this phrase is grammatically correct and very common, particularly in scientific and news-related content. While its precise nature conveys valuable insights, overstating relationships should be avoided. Recognizing the appropriate context and usage nuances enhances clarity and credibility. Alternatives include "complete association" or "exact relationship", depending on the context. Remember to use it accurately to reflect the data's true nature.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

complete association

Emphasizes the completeness of the link between variables.

total correspondence

Highlights a direct and mirroring relationship.

exact relationship

Focuses on the precision and accuracy of the link.

ideal alignment

Implies the variables are perfectly matched or in agreement.

full interconnectedness

Stresses that the two concepts are fully linked.

absolute dependence

Highlights how one variable is completely reliant on another.

inseparable link

Emphasizes the inability to separate the variables.

mirror image

Indicates that the two elements are identical reflections of each other.

direct proportionality

Suggests a relationship where variables increase or decrease at a constant rate.

flawless synchronicity

Underlines the impeccable timing and harmony between events.

FAQs

How is "a perfect correlation" used in a sentence?

Use "a perfect correlation" to describe a relationship where two variables move together exactly. For example, "The study found "a perfect correlation" between ad spending and phone calls placed".

What does a value of 1 mean in the context of "a perfect correlation"?

In statistical terms, a correlation of 1 indicates "a perfect correlation", meaning that as one variable increases, the other increases proportionally, and vice versa.

Is it common to find "a perfect correlation" in real-world data?

Finding "a perfect correlation" in real-world data is rare. Most relationships are complex and influenced by multiple factors, resulting in correlations less than 1.

How does "a perfect correlation" differ from a strong correlation?

A perfect correlation implies a value of 1, indicating a direct and absolute relationship. A strong correlation, however, simply suggests a high degree of association, but not necessarily a perfect one.