Learn more about scatter diagrams with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

A line of best fit is usually drawn on a scatter diagram. It's drawn so that the points are evenly distributed on either side of the line. There are various methods for drawing this 'precisely ...

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