Grade 4/Data & Graphing
Mean, Median, Mode, Range (1213)
Calculate the mean, median, mode, and range of a data set.
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Quick Tip
Mean: Average (Add all, divide by count).
Median: Middle number (Order first!).
Mode: Most common number.
Range: Biggest - Smallest.
Median: Middle number (Order first!).
Mode: Most common number.
Range: Biggest - Smallest.
Teacher Resources
Teaching Notes
Teach the rhyme: 'Hey diddle diddle, the Median's the middle; you add and divide for the Mean. The Mode is the one that appears the most, and the Range is the difference between.'
Vocabulary
Mean: The average of a set of numbers.
Median: The middle number in an ordered set.
Mode: The number that appears most often.
Range: The difference between the highest and lowest.
Common Mistakes
- Forgetting to order numbers for Median
- Confusing Mean and Median
- Not ordering numbers for median
- Confusing mean/median/mode
- Incorrect range calculation
- Arithmetic errors during mean
Differentiation
SupportFocus on Mode and Range first.
ChallengeFind the mean of a set with a decimal answer.
Discussion Questions
- Which average (mean, median, mode) is best for describing the data?
- When is the mean most useful?
- Why is ordering important for median?
- Can a data set have no mode?
- How does an outlier affect range?
Extension Activities
- Collect class data (shoe size) and find the stats.
Parent Tip
Calculate the average of family members' ages.
Learning Path
Skill Cluster
Data Analysis & Statistics
Estimated Time
20 minutes
Skills Practiced
basic statistics
Prerequisites
- 1212
- Basic Arithmetic Operations
- Ordering Numbers
- Interpreting Data
Next Steps
- Data Interpretation with Outliers
- Choosing Appropriate Measures
- Comparing Data Sets
- Data Tables and Graphs
- Probability Basics
- Problem Solving with Data