# How is this relationship between variables called?

#### awp9990

##### New Member
Hello!

So, this is the way i see it:

When we have a negative correlation, we have data showing that a low A variable value happens simultaneously with a high B variable value and, in the same set of data, we have data showing that, high A variable value happens simultaneously with a low B variable value.

So, a negative correlation involves data about low A, high B and, at the same time about high A, low B.

But I wonder if there is a name for a relationship between two variables when we only have data showing low A, high B and not also high A, low B?

Thank you!

#### Buckeye

##### Active Member
Definition via google: Negative correlation is a relationship between two variables in which one variable increases as the other decreases, and vice versa. In statistics, a perfect negative correlation is represented by the value -1.0, while a 0 indicates no correlation, and +1.0 indicates a perfect positive correlation.

So, we are speaking about increasing/decreasing as it relates to the trend in the data (the red line in the graph). It might be helpful to think of real-world examples:

As vehicle speed decreases, time to reach destination increases.
When supply decreases, demand increases.
https://examples.yourdictionary.com/negative-correlation-examples.html

#### awp9990

##### New Member
Definition via google: Negative correlation is a relationship between two variables in which one variable increases as the other decreases, and vice versa. In statistics, a perfect negative correlation is represented by the value -1.0, while a 0 indicates no correlation, and +1.0 indicates a perfect positive correlation.

So, we are speaking about increasing/decreasing as it relates to the trend in the data (the red line in the graph). It might be helpful to think of real-world examples:

As vehicle speed decreases, time to reach destination increases.
When supply decreases, demand increases.
https://examples.yourdictionary.com/negative-correlation-examples.html
I understand. But do we have a name for the type of data relationship present in the upper square?

#### Buckeye

##### Active Member
The entire picture shows an example of negative correlation. I don't believe we distinguish between the two smaller squares (at least in the context of correlation). Clustering analysis might explain groups of data like that.

#### hlsmith

##### Less is more. Stay pure. Stay poor.
How do you define low and high - it is all relative. I think you are creating something that doesn't need a name, just talking about the 'tails'.

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