Grade 9 Scatter Plots Worksheet

Grade 9 Scatter Plots Worksheet

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?

2. Which type of correlation would you expect between the number of hours studied for a test and the test score?

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.

8. A scatter plot is an effective way to visualize the relationship between two categorical variables.

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.