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Last updated at Sept. 6, 2021 by Teachoo
Example 14 - Chapter 15 Class 11 Statistics - NCERT Solution Coefficient of variation of two distributions are 60 and 70, and their standard deviations are 21 and 16, respectively. What are their arithmetic means. For first distribution Coefficient of variation(CV) = 60 Standard deviation = 21 We know that CV = (ππ‘ππππππ πππ£πππ‘πππ)/ππππ Γ 100 60 = 21/ππππ Γ 100 Mean = 21/60 Γ 100 Mean = 35 For second distribution Coefficient of variation(CV) = 70 Standard deviation = 16 We know that CV = (ππ‘ππππππ πππ£πππ‘πππ)/ππππ Γ 100 70 = 16/ππππ Γ 100 Mean = 16/70 Γ 100 Mean = 22.85