What is the primary characteristic that defines the line of best fit for a scatter plot?

It connects the first and last data points.

It is calculated to be as close as possible to all data points.

It is the easiest line to draw by hand.

How is a line of best fit different from a line of fit that is estimated visually?

The line of best fit is always steeper.

The line of best fit is found using a precise mathematical formula.

The line of best fit must pass through the origin $(0,0)$.

The line of best fit can only be used for positive trends.