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Ex 13.1, 1 - Chapter 13 Class 11 Statistics
Last updated at July 14, 2026 by Teachoo
Mean deviation about mean - Ungrouped
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
Ex 13.1, 1 Find the mean deviation about the mean for the data 4, 7, 8, 9, 10, 12, 13, 17 We use the formula Mean of the data = Sum of all terms / Total numbers of terms Mean = 4 + 7 + 8 + 9 + 10 + 12 + 13 + 17 / 8 = 80/8 = 10 We also find mean deviation about mean = Sum | x - Mean| /8 = 24/8 = 3
