Mean, Median, and Mode — Probability & Statistics Practice Worksheet
Measures of center describe the "typical" value in a data set. The mean (average) is the sum divided by the count. The median is the middle value when data is ordered. The mode is the most frequent value.
The range (max min) measures spread, not center. When data has outliers, the median is often more representative than the mean — consider housing prices or income data.
For an even number of values, the median is the average of the two middle values. A data set can have no mode, one mode, or multiple modes.
Skills practiced
- Calculating mean, median, and mode
- Finding range
- Choosing the best measure of center
- Interpreting data in context
Practice Worksheet: Mean, Median, and Mode
Instructions: Solve each problem carefully. Show all work clearly. Write your final answer in the space provided or on a separate sheet as directed.
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1.Find the mean, median, and mode of the following data set:
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2.Find the mean, median, and mode of the following data set:
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3.The test scores for a class of 8 students are: Find the mean, median, and mode of these scores.
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4.A basketball player scored the following points in 6 games: Find the mean, median, and mode.
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5.Find the mean, median, and mode of the following data set:
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6.The ages (in years) of 7 people in a room are: Find the mean, median, and mode.
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7.Find the mean, median, and mode of the following data set:
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8.The number of books read by 5 students over summer break: Find the mean, median, and mode.
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9.Find the mean, median, and mode of the following data set:
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10.The daily high temperatures (in F) for one week were: Find the mean, median, and mode.
Answer Key
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1.
Mean: ; Median: (4th value); Mode:Final answer: Mean: , Median: , Mode:
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2.
Mean: ; Median: ; Mode:Final answer: Mean: , Median: , Mode:
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3.
Data: (sorted); Mean: ; Median: ; Mode:Final answer: Mean: , Median: , Mode:
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4.
Data: (sorted); Mean: ; Median: ; Mode:Final answer: Mean: , Median: , Mode:
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5.
Mean: ; Median: ; Mode:Final answer: Mean: , Median: , Mode:
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6.
Data: (sorted); Mean: ; Median: (4th value); Mode:Final answer: Mean: , Median: , Mode:
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7.
Mean: ; Median: (4th value); Mode:Final answer: Mean: , Median: , Mode:
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8.
Data: (sorted); Mean: ; Median: (3rd value); Mode: No mode (all values appear once)Final answer: Mean: , Median: , Mode: No mode
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9.
Mean: ; Median: (5th value); Mode:Final answer: Mean: , Median: , Mode:
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10.
Data: (sorted); Mean: ; Median: (4th value); Mode:Final answer: Mean: , Median: , Mode:
Common mistakes to avoid
- Forgetting to order data before finding the median
- Confusing mean with median
- Reporting mode when no value repeats
- Including the wrong count when calculating mean
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Last updated: 2026