StatTutor Lesson - Parameters and Statistics

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Parameters and Statistics
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      Questions 1-3

      124

      Question 1.

      Is the mean of the measurements of individuals in a sample a statistic or a parameter?

      A.
      B.

      Incorrect. The mean of data in a sample is a statistic.
      Correct. The mean of data in a sample is a statistic.
      Incorrect. Try again.
      2

      Question 4

      193

      Question 4.

      Is the mean SAT of all entering freshmen a statistic or a parameter?

      A.
      B.

      Incorrect. Since the mean is of all entering freshmen, it is the mean of a population and hence, a parameter.
      Correct. Since the mean is of all entering freshmen, it is the mean of a population and hence, a parameter.
      Incorrect. Try again.
      2

      Question 5

      205

      Question 5.

      Is the proportion of people who prefer Coke over Pepsi in a sample of mall shoppers a statistic or a parameter?

      A.
      B.

      Incorrect. Since the people who were questioned are from a sample, the proportion is of a sample and hence, a statistic.
      Correct. Since the people who were questioned are from a sample, the proportion is of a sample and hence, a statistic.
      Incorrect. Try again.
      2

      Questions 6-7

      221

      Question 6.

      Is the mean number of pepperoni slices on a 12" pizza from a sample of a certain brand of pepperoni pizzas a statistic or a parameter?

      A.
      B.

      Incorrect. Since the mean is of a sample of pizzas, it is a statistic.
      Correct. Since the mean is of a sample of pizzas, it is a statistic.
      Incorrect. Try again.
      2