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    Statistic problems

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    1. Find the mean, median, and mode for the set of scores in the following frequency distribution table:

    X

    10
    9
    8
    7
    6
    5

    f

    2
    3
    5
    6
    3
    1

    2. A sample of n= 20 scores has a mean of M=6. If one person with a score of X= 2 is added to the sample, what will be the value of the new mean?

    3. A sample of n = 7 score has a mean of M = 5. After one new score is added to the sample, the new mean is found to be M=7. What is the value of the new score?

    4. A population has u = 100 and o = 20. If you select a single score from this population, on the average, how close would it be to the population mean? Explain your answer.

    5. A sample of n= 20 scores has a mean of M= 30.
    a. If the sample standard deviation is s = 10, would a score of X = 38 be considered an extreme value (out of the tail of the distribution)?
    b. If the sample standard deviation is s = 2, would a score of X = 38 be considered an extreme value) out in the tail of the distribution)?

    6. For the following scores:
    1, 0, 4, 1, 1, 5
    a. Calculate the mean.
    b. Find the deviation for each score, and check that the deviation sum to zero.
    c. Square each deviation and compute SS.

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    https://brainmass.com/statistics/frequency-distribution/statistic-problems-280309

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