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Stats problem!!

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abhinav khanna Rising GMAT Star Default Avatar
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Stats problem!! Post Sun Apr 15, 2012 7:25 am
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  • Lap #[LAPCOUNT] ([LAPTIME])
    Hi all,
    Can anyone of you guide me on how to find mode in a set with repeating numbers and -ve/+ve numbers. For instance:

    Set A, B, and C consist of the following elements:
    A {0, 3, 4, 2, 0, 4, 7, 8, 4, 17} B {20, 12, -7, -9, -5, -7, 11, -5, 68} C {-1.5, 0, 1.5}. If Z is
    defined as the sum of modes of sets A, B, and C, what is the value of Z?

    Thanks

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    Post Sun Apr 15, 2012 9:40 am
    Mode of a set of numbers is the element in the set which occurs maximum number of times:

    In set A, 4 is the mode.
    In set B, both -7 and -5 are the modes (It is a bimodal set)
    In set C, there is no mode.

    Sum of the modes = 4 + (-5) + (-7) = -8.

    Hope this is all right!

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