# Slope

## Description

This function is used to calculate the slope of the linear regression of the given curve, which is defined as:

$b = \frac{\sum{(x-\bar{x})(y-\bar{y})}}{\sum{(x-\bar{x})^2}}$

where $\bar{x}$ and $\bar{y}$ are the means of x and y.

## Syntax

 double Slope(vector vx, vector vy)


## Parameters

vx

Input vector for independent variable.

vy

Input vector for dependent variable.

## Return

Return the the slope of the linear regression of the given curve.

## Example

newbook;
col(A) = data(1,5);
col(B) = uniform(5);
Slope(col(A),col(B)) = ;