For publication and/or presentation purposes, is there a symbol to denote the calculation of a correlation between two vectors?

Obviously, for the value of the correlation is symbolically represented using $\rho$ for Pearson's or Spearman's, and $\tau$ for Kendall's, but what is the appropriate way (if any) to present the calculation without the entire formula?

For instance, if I want to report that I calculated the Pearson's correlation between two vectors, $x$ and $y$, I would image writing it as:

$\rho$ = $x$ (some symbol) $y$

The same way to represent the product of $x$ and $y$ would be written $x$ x $y$, or the sum by $x$ + $y$ or $\Sigma xy$.

Would $\rho$ = $cor(x,y)$ be correct?


The pearson correlation coefficient is defined as


like you already mentioned (correlation with two 'r' as far as i know). For using the correlation with a vector it should be simple enough to mark them as vectors. Use the notation from the ISO 80000-2:2009 [1] for this.

bold italic serif:

one way to notate

or with vector arrows

vector arrows

i guess you are already using one of the notations for your vectors, so take the one you are already using in your paper for keeping your style.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.