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Math Help - Iterquartile Range?, Median & Mode?, Symmetrical?

  1. #1
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    Question Iterquartile Range?, Median & Mode?, Symmetrical?

    HI All, plz help me solving these..

    For the set of data of 20 observations
    32, 30, 24, 24, 36, 33, 29, 29, 30, 28
    57, 52, 51, 49, 55, 54, 50, 48, 53, 56

    a) Find interquartile range, Quartile deviation.
    b) Also find out the median and mode by using excel operations.
    c) Is data perfectly symmetrical or not .Give answer with arguments?


    thnx
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by cu4mail View Post
    HI All, plz help me solving these..

    For the set of data of 20 observations
    32, 30, 24, 24, 36, 33, 29, 29, 30, 28
    57, 52, 51, 49, 55, 54, 50, 48, 53, 56

    a) Find interquartile range, Quartile deviation.
    b) Also find out the median and mode by using excel operations.
    c) Is data perfectly symmetrical or not .Give answer with arguments?


    thnx
    First sort the data into ascending or decending order.

    RonL
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  3. #3
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    Quote Originally Posted by CaptainBlack View Post
    First sort the data into ascending or decending order.

    RonL
    24
    24
    28
    29
    29
    30
    30
    32
    33
    36
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57

    Sorted in Ascending Order
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  4. #4
    Grand Panjandrum
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    Quote Originally Posted by cu4mail View Post
    24
    24
    28
    29
    29
    30
    30
    32
    33
    36
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57

    Sorted in Ascending Order
    24
    28
    29
    29
    30
    ------- 1st quartile 30
    30
    32
    33
    36
    48--------median
    49
    50
    51
    52
    ------- 3rd quartile 52.5
    53
    54
    55
    56
    57


    RonL
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  5. #5
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    Question

    Quote Originally Posted by CaptainBlack View Post
    24
    28
    29
    29
    30
    ------- 1st quartile 30
    30
    32
    33
    36
    48--------median
    49
    50
    51
    52
    ------- 3rd quartile 52.5
    53
    54
    55
    56
    57


    RonL
    Thanks! Ront

    Can u also please help me how to determine if this data is symmetrical?
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  6. #6
    Grand Panjandrum
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    Quote Originally Posted by cu4mail View Post
    Thanks! Ront

    Can u also please help me how to determine if this data is symmetrical?
    What is your definition of symatrical?

    The data are not since the two modes are both less than the mean.

    RonL
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