Understanding Ratio Data
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Questions and Answers

What is the main characteristic that distinguishes ratio data from interval data?

  • Order and fixed interval between data points
  • Meaningful (absolute) zero (correct)
  • Measures of distribution spread
  • Measures of central tendency

    • Which of the following is NOT a valid analysis that can be conducted on ratio data?

  • Determining categorical groupings (correct)
  • Calculating mean, median, and mode
  • Correlations or regressions
  • Calculating variance or standard deviation

    • Why is it rare to collect ratio-level data in the assessment of student learning?

  • Because student learning outcomes are usually qualitative in nature (correct)
  • Because students are not good at providing accurate data
  • Because ratio data requires complex statistical analysis
  • Because ratio data is not relevant to student assessment

    • Which of the following is an example of ratio data?

    <p>Weight of a student in kilograms</p> Signup and view all the answers

    What types of analyses can be performed on ratio data according to the text?

    <p>Measures of relationship and mean comparisons</p> Signup and view all the answers

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