Indu dhiman Asked a Question
May 22, 2021 4:14 pmpts 30 pts
Question: 30/50 Unit Solved Papers (1-10) - Economics The mean and S.D. of a data set are 10 and 3. If every observation is increased by 2 then the coefficient of variation will be: 20% 25% 30% 35% View Solution 30%
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  • Shashikant
    yes it must be 25% since variance and consequently sd is independent of change of scale ( but not of origin) sd will remain same
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  • Aabha mishra 1 thankyou
    here is the answer. I hope it's clear to you
    • cropped5478721076342366545.jpg
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    Anushka
    so I think sd won't change .
    • cropped7207327774668831928.jpg
  • Anushka
    I think it's 25% only. as mean value rises by 2 and sd remains same ie 3. so 3/12×100 is 25 %.
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