Check sibling questions

Example 14 - Chapter 15 Class 11 Statistics (Term 1)

Last updated at Sept. 6, 2021 by

Example 14 - Coefficient of variation are 60, 70, standard - Co-efficient of variation

This video is only available for Teachoo black users

Subscribe Now

Transcript

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 = (π‘†π‘‘π‘Žπ‘›π‘‘π‘Žπ‘Ÿπ‘‘ π‘‘π‘’π‘£π‘–π‘Žπ‘‘π‘–π‘œπ‘›)/π‘€π‘’π‘Žπ‘› Γ— 100 60 = 21/π‘€π‘’π‘Žπ‘› Γ— 100 Mean = 21/60 Γ— 100 Mean = 35 For second distribution Coefficient of variation(CV) = 70 Standard deviation = 16 We know that CV = (π‘†π‘‘π‘Žπ‘›π‘‘π‘Žπ‘Ÿπ‘‘ π‘‘π‘’π‘£π‘–π‘Žπ‘‘π‘–π‘œπ‘›)/π‘€π‘’π‘Žπ‘› Γ— 100 70 = 16/π‘€π‘’π‘Žπ‘› Γ— 100 Mean = 16/70 Γ— 100 Mean = 22.85

Davneet Singh's photo - Teacher, Engineer, Marketer

Made by

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.