Statistics & Data Analysis

Learn to analyze data using measures of center (mean, median, mode) and measures of spread (range).

8th Grade

Statistics

~45 min

🎮 Interactive Activity: Mean Calculator

Calculate the mean (average) of a dataset!

Data: 5, 8, 12, 15, 20

🎮 Interactive Activity: Median Finder

Find the median (middle value) of a dataset!

Data: 3, 7, 5, 9, 11, 13, 15

1. Introduction to Statistics

📚 Statistics Definition

Statistics is the study of collecting, organizing, analyzing, and interpreting data. We use measures of center and spread to summarize data.

Measures of Center

Mean, Median, Mode
Describe the "typical" value

Measures of Spread

Range, IQR, Standard Deviation
Describe variability

2. Measures of Center

3. Data Analysis

4. Understanding Mode

5. Range and Spread

6. Outliers and Their Impact

7. Worked Examples

8. Frequently Asked Questions

Practice Time!

Practice Quiz

Questions

Correct

Score

What is the mean of 5, 8, 12, 15, 20?

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What is the median of 3, 5, 7, 9, 11?

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What is the mode of 2, 3, 3, 4, 5, 3, 6?

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What is the range of 10, 15, 20, 25, 30?

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Which measure of center is most affected by outliers?

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What is the mean of 4, 6, 8, 10, 12, 14?

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What is the median of 2, 4, 6, 8, 10, 12?

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If a dataset has no mode, what does this mean?

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What is the range of 5, 10, 15, 20, 25, 30, 35?

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Which is a measure of spread?

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