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Question 3 - Co-efficient of variation - Chapter 13 Class 11 Statistics
Last updated at July 14, 2026 by Teachoo
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)
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Co-efficient of variation
- Indirect questions - Multiplication of observation
- Indirect questions - finding remaining observations
- Indirect questions - Incorrect observation
Transcript
Ex15.3, 3 An analysis of monthly wages paid to workers in two firms A and B, belonging to the same industry, gives the following results: Which firm A or B pays larger amount as monthly wages? Ex15.3, 3 An analysis of monthly wages paid to workers in two firms A and B, belonging to the same industry, gives the following results: (ii) Which firm, A or B, shows greater variability in individual wages? Variance in firm A = 100 Standard deviation in firm A = = 100 = 102 = 10 Variance in firm B = 121 Standard deviation in firm B = = 121 = 112 = 11 Since mean in both the firms is same, i.e., Rs.5253, Therefore, the firm with greater standard deviation will have more variability. Thus, the plant B has greater variability in the individual wages.
