Question

what is a line of fit used for? *

○ to separate all the points.

○ to make the graph look pretty.

○ to show the general direction of the graph and make predictions.

○ to connect all the points.

Explanation:

A line of fit (or trend line) is a line drawn on a scatter plot to represent the general trend of the data points. Its purpose is to show the overall direction (positive or negative correlation) of the data and to be used for making predictions about future or unknown data points. The other options are incorrect: it doesn't separate all points, its purpose isn't aesthetic, and it doesn't connect all points (as data in scatter plots is often scattered and not all points lie on the line).

Answer:

C. To show the general direction of the graph and make predictions.