Line of Best Fit Worksheet
Understand and draw lines of best fit for scatter plots, interpreting their meaning in real-world contexts.
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Line of Best Fit
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Read each question carefully and follow the instructions. For scatter plots, draw a line of best fit and answer the questions based on your line.
1. The scatter plot below shows the number of hours students spent studying for a test and their scores. Draw a line of best fit for the data.
a. Describe the association between study hours and test scores (positive, negative, or no association).
b. Using your line of best fit, predict the score of a student who studied for 7 hours.
2. Which of the following statements best describes a line of best fit?
A line that connects all the data points.
A line that passes through the origin.
A line that shows the general trend of the data.
A line that is always perfectly horizontal.
3. A line of best fit helps us to make about data that falls within the observed range.
4. If a scatter plot shows points generally going up from left to right, it indicates a association.
5. It is always possible to draw a perfect line of best fit that passes through every data point on a scatter plot.
True
False
6. Explain why a line of best fit is useful when analyzing a scatter plot.