Introduction to Statistics Concepts
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Questions and Answers

Which type of scale has an absolute zero point?

  • Interval
  • Nominal
  • Ratio (correct)
  • Ordinal
  • What characteristic do interval and ratio scales share?

  • Nominal
  • Equal intervals (correct)
  • Magnitude
  • True 0
  • How are most psychological variables like intelligence typically treated in practice?

  • Nominal data
  • Ratio data
  • Ordinal data
  • Interval data (correct)
  • Which type of scale is considered to contain no absolute zero point?

    <p>Interval</p> Signup and view all the answers

    In a histogram, what does the height of each bar represent?

    <p>Frequency of the value</p> Signup and view all the answers

    What is the purpose of a frequency polygon in statistics?

    <p>To depict frequency distributions for continuous data</p> Signup and view all the answers

    What type of scale involves classification or categorization based on one or more distinguishing characteristics?

    <p>Nominal scale</p> Signup and view all the answers

    What type of distribution has two or more high frequencies separated by a lower frequency?

    <p>Rectangular distribution</p> Signup and view all the answers

    Which level of measurement involves rank classification like clothing sizes (S, M, L, XL) and likert scales?

    <p>Ordinal</p> Signup and view all the answers

    In a positively skewed distribution, where is the peak (highest frequency) located?

    <p>Left-hand side</p> Signup and view all the answers

    What term describes a distribution where the pattern of frequencies on the left and right side are mirror images of each other?

    <p>Symmetrical distribution</p> Signup and view all the answers

    In the context of statistics, what does a variable represent?

    <p>A condition that changes for different individuals</p> Signup and view all the answers

    What is the main purpose of assigning numbers or symbols to characteristics according to rules?

    <p>To measure variability</p> Signup and view all the answers

    Which statistic describes the amount of variation in a distribution?

    <p>Standard deviation</p> Signup and view all the answers

    Which type of scale places items into mutually exclusive and exhaustive categories?

    <p>Nominal scale</p> Signup and view all the answers

    What does leptokurtic distribution indicate about the score's concentration?

    <p>Concentrated towards the mean</p> Signup and view all the answers

    What is the characteristic of an ordinal scale that distinguishes it from other measurement levels?

    <p>Ordered or ranked categories</p> Signup and view all the answers

    Which type of distribution has an extremely large deviation from the mean?

    <p>Platykurtic distribution</p> Signup and view all the answers

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