Who give the concept of standard deviation and CV?

Related Mcqs:

1. If the standard deviation of the values 2, 4, 6, 8 is 2.58, then the standard deviation of the values 4, 6, 8, 10 is_______________?

   A. 0
   B. 2.58
   C. 5
   D. 4.66
   E. 2.33

2. If the standard deviation of the values 2,4,6,8 is 2.33, then the standard deviation of the values 4,6,8,10 is_____________?

   A. 0
   B. 2.58
   C. 4.66
   D. 2.33

3. Mean Deviation, Variance and Standard Deviation of the values 4, 4, 4, 4, 4, 4 is_________________?

   A. 4
   B. 8
   C. 2
   D. 12
   E. 0

4. The standard deviation is always _________ than mean deviation?

   A. Greater
   B. Less
   C. Equal
   D. None

5. If variance iv standard deviation is minimum if the deviation taken from______________?

   A. Mode
   B. Mean
   C. Average
   D. G.M.

6. Mean deviation, Variance and Standard Deviation of the values 4,4,4,4,4,4 is_______________?

   A. 4
   B. 8
   C. 2
   D. 0

7. The mean of a distribution is 14 and the standard deviation is 5. What is the value of the coefficient of variation ?

   A. 60.4%
   B. 48.3%
   C. 35.7%
   D. 27.8%

8. If the standard deviation of a population is 9, the population variance is_____________?

   A. 9
   B. 3
   C. 21
   D. 81

9. Standard deviation is calculated from the Harmonic Mean (HM) ________________?

   A. Always
   B. Sometimes
   C. Never
   D. None of these

10. If mean is 25 and standard deviation is 5 then C.V (Coefficient of variation) is_______________?

    A. 100%
    B. 25%
    C. 20%
    D. None of these