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Q3

Quiz by Dmitry Kislitsyn

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10 questions
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  • Q1

    A population measure, such as the population mean, is called a:

    statistic

    sample value

    prime number

    parameter

    30s
  • Q2

    If  a business manager selected a sample of customers and computed the mean income for this sample of customers, she has computed:

    an ordinal value

    a parameter

    a nominal value

    a statistic

    30s
  • Q3

    The most frequently used measure of central tendency is:

    mean

    mode

    median

    middle value

    30s
  • Q4

    Consider the following sample data:

    25, 11, 6, 4, 2, 17, 9, 6

    For these data the sample mean is:

    12

    8

    10

    3

    60s
  • Q5

    Consider the following sample data:

    25, 11, 6, 4, 2, 17, 9, 6

    For these data the median is:

    10

    3.5

    None of the above

    7.5

    60s
  • Q6

    A small company has 7 employees. The numbers of years these employees have worked for this company are shown as follows:

    4, 14, 3, 16, 9, 8, 16

    Based upon this information, the mode number of years that employees have been with this company is:

    16

    9

    2

    10

    60s
  • Q7

    A sample of people who have attended a college football game at your university has a mean = 3.2 members in their family. The mode number of family members is 2 and the median number is 2.0. Based on this information:

    the population mean exceeds 3.2

    the distribution is left-skewed

    the distribution is right-skewed

    the distribution is bell-shaped (=symmetrical)

    30s
  • Q8

    A major retail store has studied customer behavior and found that the distribution of time customers spend in a store per visit is symmetric with a mean equal to 17.3 minutes. Based on this information, which of the following is true?

    The median is approximately 17.3 minutes

    The median is to the right of the mean

    The distribution is right-skewed

    The median is to the left of the mean

    30s
  • Q9

    A large retail company gives an employment screening test to all prospective employees. Franklin Gilman recently took the test and it was reported back to him that his score placed him at the 80th percentile. Therefore:

    80 people who took the test scored below Franklin

    The company mean score is 50

    Franklin was in the bottom 20 percent of those that have taken the test

    Franklin scored as high or higher than 80 percent of the people who took the test

    30s
  • Q10

    The most appropriate way to calculate mean  if the data values are ratios of two variables with different measures (rates) is:

    weighted mean

    geometric mean

    arithmetic mean

    harmonic mean

    30s

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