Grade 9 Scatter Plots Worksheet
This worksheet covers interpreting and creating scatter plots, identifying correlations, and drawing lines of best fit for Grade 9 Math students.
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Grade 9 Scatter Plots Worksheet
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Read each question carefully and follow the instructions. Show all your work where applicable.
1. Which of the following describes a scatter plot where as one variable increases, the other variable generally decreases?
Positive correlation
Negative correlation
No correlation
Causation
2. Which type of correlation would you expect between the number of hours studied for a test and the test score?
Positive correlation
Negative correlation
No correlation
Inverse correlation
3. A scatter plot shows the relationship between two variables.
4. When creating a scatter plot, the independent variable is usually placed on the axis.
5. A line of is used to model the trend in a scatter plot.
6. The scatter plot below shows the relationship between the number of hours a student spends watching TV per week and their GPA.
Describe the correlation shown in the scatter plot. What does this suggest about the relationship between TV watching and GPA?
7. A strong correlation always implies causation.
True
False
8. A scatter plot is an effective way to visualize the relationship between two categorical variables.
True
False
9. Plot the following data points on the graph below and draw a line of best fit. Assume the x-axis represents 'Age (years)' and the y-axis represents 'Height (cm)'.
Data: (5, 110), (7, 120), (8, 128), (10, 135), (12, 145), (14, 152), (15, 158)
Based on your scatter plot, describe the correlation between age and height.