Answer :
Final answer:
A scatter diagram is used to visualize the relationship between two variables, while linear regression can approximate the relationship using a straight line.
Explanation:
A scatter diagram is a graph that plots pairs of numerical data, with one variable on the x-axis and the other on the y-axis. It helps visualize the relationship between the two variables. To approximate the relationship between x and y by drawing a straight line, we can use linear regression. Linear regression finds the best-fitting line through the data points, minimizing the distance between the points and the line.
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