What is correlation in the context of ecological studies?

Correlation refers to the relationship between two variables.

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What is Spearman's rank correlation?

Spearman's rank correlation is a statistical test to determine if there is a correlation between two variables when one or both of them are not normally distributed.

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What does a correlation coefficient of 1 indicate?

A correlation coefficient of 1 indicates a perfect, positive linear correlation, where all points lie on a straight line.

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What does a positive correlation mean?

A positive correlation means that both variables increase or decrease together.

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What does a negative correlation mean?

A negative correlation means that one variable increases as the other variable decreases.

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What does a correlation coefficient close to 0 indicate?

A correlation coefficient close to 0 means that there is no clear relationship between the two variables.

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What does a correlation coefficient show?

A correlation coefficient shows the relationship between two datasets.


There may be no correlation, a positive correlation (as one value increases the other increases too), or a negative correlation (as one value increases the other decreases).

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