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If the assumed mean, A=45 and bard=9, th...

If the assumed mean, `A=45` and `bard=9`, then the value of `barX` is_______.

A

`54`

B

`36`

C

`-54`

D

`-36`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • If a number 6573547 times 45 is divisible by 9, then find the value of x.

    A
    7
    B
    0
    C
    8
    D
    6

  • If & means '+', $ menas '-',# means '+' and % means 'xx', then the value of 9 % 3 & 22 $ 52 & 85 # 17.

    A
    8
    B
    2
    C
    `-3`
    D
    5

  • Let barX and M.D. be the mean and the mean deviation about barX of n observations x_i AAi = 1, 2, 3, ....., n . If each of the observations is increased by 5, then the value of new mean and the mean deviation about the new mean respectively, are

    A
    `barX + 5 , M.D.`
    B
    `barX + 5, M.D. + 5`
    C
    `barX, M.D. +5`
    D
    `barX, M.D.`

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