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5 Written Questions

5 Multiple Choice Questions

  1. for a data set is the difference between the third quartile and the
    fi rst quartile: Q3 􀀀 Q1.
  2. 75/100 * N
  3. is one of the contributing factors to sampling error. It is the result of choosing a bad sample. Good methods of sample selection minimize sample bias.
  4. is a sampling method which uses random or probabilistic selection as part of its design.
  5. is an alternative to a census, in which data is collected from only some members of the population.

5 True/False Questions

  1. rangeof a quantitative data set is a summary of the center of the data set.
    It is computed by adding the data elements together and dividing by N, the number of
    data elements.

          

  2. outlieris an extreme data point that does not t into the overall pattern of the rest of the data.

          

  3. Q125/100 * N

          

  4. capture-recaptureis an alternative to a census, in which data is collected from only some members of the population.

          

  5. five-number summaryfor a data set consists of the minimum value in the data set
    Min, the fi rst quartile Q1, the median M = Q2, the third quartile Q3, and the maximum value Max.

          

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