Grade 9 Data & Statistics Worksheets
Free printable data & statistics practice for Grade 9 students. Generate problems, solve them on screen or paper, and download as PDF.
What your child will practice
- Scatter Plots and CorrelationCreate scatter plots to examine relationships between two variables and identify correlation.
Practice Worksheet
Data & Statistics Practice - Grade 9
Solve each problem. Show your work where necessary. For word problems, write your final answer clearly.
- 1.A scatter plot shows the relationship between hours studied and test scores for a group of students. The plot shows a generally upward trend. What type of correlation does this indicate?
- 2.Consider the data set: 12, 15, 18, 20, 22, 25. Calculate the mean, median, and mode of this data set.
- 3.A survey asks 100 people about their favorite type of music. The results are: Pop (45), Rock (30), Hip Hop (20), Other (5). If you were to create a pie chart for this data, what would be the central angle for the 'Pop' music sector?
- 4.A researcher collects data on the heights of students in a school. They only collect data from students in the basketball team. What is a potential bias in this data collection method?
- 5.The number of hours a student spends on social media per week and their final grade in a math class are recorded over a semester. The data is plotted on a scatter plot. If the plot shows a downward trend, what can be inferred about the relationship between social media usage and math grades?
- 6.A company wants to know the average commute time for its employees. They decide to ask employees working on a specific floor only. Explain why this might not provide a representative sample of all employees and suggest a better data collection method.
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Grade offline workFrequently Asked Questions
How often should my child practice data & statistics?
Short daily practice sessions of 10-15 minutes are more effective than long weekly sessions. Consistency builds lasting understanding.
How do I know if my child is at the right level for these worksheets?
If your child can complete about 70% of the problems correctly, the level is appropriate. If it's too easy or too hard, try an adjacent grade level.
Can I use these worksheets for homeschool?
Yes. The worksheets align with standard curriculum expectations and can supplement any math program. Generate multiple worksheets to create a full practice set.