Line of Best Fit – Practice Problems
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A line of best fit is a line that best represents the data of a scatter plot. It is as close as possible to all points; it may pass through some of the points, none of the points, or all of the points. The line of best fit can be used as a tool for analyzing investment risk or trading activity. It is also used in regression analysis and is a key tool for statistical calculations such as the sum of squares. Learn how to compute the line of best fit for a scatter plot by helping Valentine Verne on his treasure hunt in the deep blue ocean. Common Core Reference: CCSS.MATH.CONTENT.8.SP.A.2
Exercises in this Practice Problem
Explain what the line of best fit is. |
Identify how to tell which line fits better when two lines are given. |
Decide which line fits the best when the following residuals are given. |
Calculate the sum of squares of the following line. |
Determine the $y$-value of the given line. |
Decide which line fits better to the given three points. |