correl

Returns the correlation coefficient of the given curve vectors.

Syntax

correl(vec_1, vec_2)

Templex Expression	Result
`{correl({0,1},{1,0})}`	`-1`
`{correl(p1w1c1.y,p1w1c2.y)}`	`0.4591`

The correlation coefficient is calculated according to the following equation:

(1)

C o r r e l (X, Y) = \frac{\sum (x - \bar{x}) (y - \bar{y})}{\sqrt{\sum {(x - \bar{x})}^{2} \sum {(y - \bar{y})}^{2}}}

$C o r r e l (X, Y) = \frac{\sum (x - \bar{x}) (y - \bar{y})}{\sqrt{\sum {(x - \bar{x})}^{2} \sum {(y - \bar{y})}^{2}}}$

If the given vectors have a different number of data points, an error is returned.

If either vector is empty, or if the standard deviation of their values is equal to 0, an error is returned.