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Ex 13.1, 8 - Chapter 13 Class 11 Statistics
Last updated at Dec. 16, 2024 by Teachoo
Mean deviation about median - Discrete Frequency
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
- 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
Ex15.1, 8 Find the mean deviation about the median for the data The given observations are already in ascending order. Adding a column corresponding to cumulative frequencies of the given data, we obtain the following table. c.f = cumulative frequency ∑128▒𝑓𝑖 = 29 ∑128▒𝑓𝑖 |𝑥𝑖 −M| = 148 ∴ Mean Deviation = (Σ 𝑓_𝑖 |𝑥_(𝑖 )− M|)/𝑓_𝑖 = 148/29 = 5.1
