Answer
Data presented in a visual form as a set of points is called a scatter plot. A line that best fits this set of points is called a regression line.
Work Step by Step
A scatter plot is the visualization form of the set of points of the data and tells us how the variables are related. From the scatter plot it can be known whether the points are closely related or not. A regression line is the line which best fits the set of points of the given data.