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  1. #1
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    help--new to statistics




    i am an undergrad student and just started statistics and already i do not unerstand--please help! see below what i need help with:

    the following is a random sample of 90-day futures prices in dollars for 1 oz of silver from the wall street journal issues in may and june of 1997. 4.74, 4.77, 4.87, 4.91, 4.83, 4.72, 4.92, 4.86, 4.97, 4.71, 4.90, 4.93, 4.75, 4.88, 4.79, 4.83, 4.89.

    a--construct a stem-and-leaf plot of the data
    b--construct a new stem-and-leaf plot of the data by doubling the stem
    c--construct a histogram of the data
    d--desribe the shape of the histogram

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    Hi raerae,

    Below is a stem-and-leaf plot:

    47 124
    47 579
    48 33
    48 6789
    49 0123
    49 7

  3. #3
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    You can use Minitab to make the histogram, if you have it.

    MTB > set c1
    DATA> 4.74, 4.77, 4.87, 4.91, 4.83, 4.72, 4.92, 4.86, 4.97, 4.71, 4.90, 4.93, 4.75, 4.88, 4.79, 4.83, 4.89
    DATA> end
    MTB > histogram c1

  4. #4
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    Below is the histogram:
    Attached Images  

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    Thumbs up


    Welcome macro90.

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