Learn how to find equations of parallel lines, work out the gradient of perpendicular lines, and prove that given lines are parallel or perpendicular.

One of the simplest prediction methods is linear regression, in which we attempt to find a 'best line' through the data points. Correlation and linear regression are closely linked—they both ...

The line of best fit is an output of regression analysis that represents the relationship between two or more variables in a dataset.

A linear relationship (or linear association) is a statistical term used to describe the directly proportional relationship between a variable and a constant.