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Statistics Test - 10

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  • Question 1
    1 / -0

    If mode, median and mean are 7x + 9, 5x - 1 and 3x + 2 respectively, then value of x is

    Solution

    3 median - 2 mean = mode
    3 (5x - 1) - 2 (3x + 2) = 7x + 9
    ⇒ 15x - 3 - 6x - 4 = 7x + 9
    ⇒ 2x - 7 = 9
    ⇒ x = 8

     

  • Question 2
    1 / -0

    If the mode of the observations 4, 2, 3, 3, 3, 2, 2, 4, 2, 4, x, 3, 4, 4, 2, 3, 4 is 4, then x cannot be equal to

    Solution

    Both (1) and (3)

     

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