# correlation

[ˌkɒrəˈleɪʃn]

## correlation Definition

• 1a mutual relationship or connection between two or more things
• 2the degree to which two or more attributes or measurements on the same group of elements show a tendency to vary together

## Using correlation: Examples

Take a moment to familiarize yourself with how "correlation" can be used in various situations through the following examples!

• Example

There is a strong correlation between smoking and lung cancer.

• Example

The study found a positive correlation between exercise and heart health.

• Example

There is a correlation between high stress levels and poor sleep quality.

## Phrases with correlation

• ### correlationcoefficient

a statistical measure of the strength of the relationship between two variables

Example

The correlation coefficient between height and weight was calculated to be 0.7.

• ### causalcorrelation

a relationship between two variables where one variable causes the other

Example

There is a causal correlation between smoking and lung cancer.

• ### spuriouscorrelation

a relationship between two variables that is not causally related, but appears to be due to coincidence or a third factor

Example

There is a spurious correlation between ice cream sales and crime rates.

## Origins of correlation

from Latin 'correlatio', from 'cor-' (together) + 'relatio' (relation)

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## Summary: correlation in Brief

The term 'correlation' [ˌkɒrəˈleɪʃn] refers to a mutual relationship or connection between two or more things. It is often used in statistical analysis to describe the degree to which two or more attributes or measurements on the same group of elements show a tendency to vary together. Examples include the correlation between smoking and lung cancer, and the correlation between exercise and heart health. Other phrases include 'correlation coefficient,' which measures the strength of the relationship between two variables, and 'spurious correlation,' which appears to be related but is actually coincidental.

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