MAT 1272 Statistics, SP2014

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  • May 10, 2014 at 8:51 pm #13785

    Ezra Halleck
    Participant

    2) There are 6 copying machines in a store. During past week, these machines produced 110, 93, 89, 69, and 103 copies. a) Find the mean, median, and standard deviation of the number of copies produced by these machines. b) With the values you have calculated, can you comment on the skewing?

    sum of x is 464 and sum of x^2 is 44040

    May 11, 2014 at 4:20 am #17971

    Oruada
    Participant

    A) Mean=110+93+89+69+103=464/5=92.8
    Median=89. which is the middle number
    Stdeviation= 110-92.8^2=295.84
    93-92.8^2=0.04
    89-92.8^2=14.44
    69-92.8^2=566.44
    103-92.8^2=10404
    sqrt295.84+0.04+14.44+566.44+10404/5=15.7

    B) No skewing because the median and mean Values are too close

    May 13, 2014 at 9:05 pm #17981

    Aziza R.
    Participant

    Median is 93 . Data should be ordered : 69, 89, 93, 103, 110 .

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