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📈 Optional Mathematics - Class 10
Lesson 11 · Comparison of Two Data using Whisker Box Plot

Dispersion Presentation

Optional MathematicsSubject
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Optional Mathematics, Class 10

Dispersion

What statistics is · Same mean, different spread

By the end of this lesson you can

📊

Define statistics and tell its short history

🎯

Explain what a measure of central tendency shows

↔️

Define dispersion and spot low, moderate and high variation

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State four reasons for measuring dispersion

How statistics grew

1
Ancient Babylonia, Egypt, China: counting people and resources
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John Graunt (1620 to 1674): London death rates, first scientific data
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Sir Ronald A. Fisher: foundation of modern statistics
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Karl Pearson and William Sealy Gosset: further work
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Today: computers and big data

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Presenter notes: Today we meet statistics and one of its most useful ideas: how spread out a set of data is. Ask the class: if two classes both have a mean mark of 50, did they perform the same?