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

Standard Deviation of Continuous Series Presentation

Optional MathematicsSubject
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Optional Mathematics, Class 10, Statistics

Standard Deviation of Continuous Series

Four methods · One answer · Coefficient of variation

By the end of this lesson you can

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Find the mid-value of any class

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Find standard deviation by four methods

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Find the coefficient of standard deviation

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Compare two sets with the C.V.

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Presenter notes: Today we measure spread in grouped data. You already know the mean tells us the centre. Now we ask how tightly the data clusters around it.