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Example 11 - Chapter 13 Class 11 Statistics
Last updated at July 14, 2026 by Teachoo
Standard deviation and variance - Discrete frequency (grouped data)
Chapter 13 Class 11 Statistics
Concept wise
- Mean deviation about mean - Ungrouped
- Mean deviation about mean - Discrete Frequency
- Mean deviation about mean - Continuous frequency distibution
- Mean deviation about median - Ungrouped
- Mean deviation about median - Discrete Frequency
- Mean deviation about median - Continuous frequency distibution
- Standard deviation and variance - Ungrouped data
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Standard deviation and variance - Discrete frequency (grouped data)
- Standard deviation and variance - Continuous frequency (grouped data)
- Co-efficient of variation
- Indirect questions - Multiplication of observation
- Indirect questions - finding remaining observations
- Indirect questions - Incorrect observation
Transcript
Example 11 Find the standard deviation for the following data: Std. Deviation(σ) = 1N N fixi2 −( fixi)2 = 148 48×9652 − 6142 = 148 463296−376996 = 148 86300 = 148 x 293.77 = 6.12 Therefore, standard deviation (σ ) = 6.12
