Question

If mean and variance of distribution are 80 and 6.25 then coefficient of variation is
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Answer 1

Coefficient of variation (CV) is 3.125 % if mean and variance of distribution are 80 and 6.25

Given:

• Mean = 80
• Variance = 6.25

To Find:

• Coefficient of variation

Solution:

• SD = √(Var)
• SD = Standard Deviation
• Var = Variance
• CV  = (SD / Mean) x 100    ( in % )
• CV = Coefficient of variation

Step 1:

Calculate SD

SD = √(Var)

SD = √6.25

SD = 2.5

Step 2:

Calculate Coefficient of variation ( CV)

CV  = (SD / Mean) x 100

CV = (2.5/80) x100

CV = 3.125 %

Coefficient of variation (CV) is 3.125 % if mean and variance of distribution are 80 and 6.25