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The mean deviation of the data 2, 9, 9, ...

The mean deviation of the data 2, 9, 9, 3, 6, 9, 4 from the mean is :

A

2.23

B

2.57

C

3.23

D

3.57

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • The mean deviation of the data 3, 10, 10, 4, 7, 10, 5 from the mean is :

    A
    2
    B
    2.57
    C
    3
    D
    3.75

  • The standard deviation of the data 6, 5, 9, 13, 12, 8, 10 is :

    A
    `sqrt((52)/(7))`
    B
    `(52)/(7)`
    C
    `sqrt(6)`
    D
    6

  • The mean devision from the data 3,10,10,4 ,7,10,5 is

    A
    2
    B
    `2.57`
    C
    3
    D
    `3.75`

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