A **line of best fit** is a straight line that approximates the relationship between points. There are two methods, one involves drawing by eye and approximating, the other involves using an equation of least squares. The following videos will explain the Equation of Least Squares Line of Best Fit Formula in HSC Standard Math.

### What is the Line of Best Fit?

The following videos explain how to write an equation for the line of best fit.

### The Equations of Least Squares Line of Best Fit Formula

The following videos explain how to use your calculator to solve exam-style questions.

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