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Coefficient of variation of two distribu...

Coefficient of variation of two distributions are 50 and 60, and their arithmetic means are 30 and 25 respectively. Difference of their standard deviation is ……

A

0

B

1

C

1.5

D

2.5

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A
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KUMAR PRAKASHAN-STATISTICS-NCERT EXEMPLAR PROBLEMS (OBJECTIVE TYPE QUESTIONS)
  1. The mean deviation about mean of the observation 3, 10, 10, 4, 7, 10, ...

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  2. Mean deviation for n observation x1,x2,……….,xn from their mean barx is...

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  3. When tested , the lives (in hours) of 5 bulbs were noted as follows : ...

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  4. Following are the marks obtained by 9 students in a mathematics test :...

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  5. The standard deviation of the data 6,5,9,13,12,8,10 is ……..

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  6. Let x1, x2 ,…………,xn be n observations and barx be their arithmetic mea...

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  7. The mean of 100 observations is 50 and their standard deviation is 5. ...

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  8. Let a,b,c,d,e be the observations with mean m and standard deviation S...

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  9. Let x1,x2, x3, x4, x5 be the observations with mean m and standard dev...

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  10. Let x1,x2,x3,………,xn be n observations . Let Wi = lxi + k for i=1,2,……,...

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  11. Standard deviations for first 10 natural numbers is

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  12. Consider the numbers 1,2,3,4,5,6,7,8,9,10 . If 1 is added to each numb...

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  13. Consider the first 10 positive integers . If we multiple each number b...

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  14. The following information relates to a sample of size 60: sum xi^2 = 1...

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  15. Coefficient of variation of two distributions are 50 and 60, and their...

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  16. The standard deviation of some centigrade (""^@C) temperature is 5. if...

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