Types of Variables in Statistics
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Questions and Answers

What type of data does hair color represent?

  • Dichotomic data
  • Qualitative data (correct)
  • Polynomic data
  • Quantitative data

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

  • Number of children in a family
  • Education level (correct)
  • Blood type
  • Gender

    • What is the main characteristic of quantitative data?

  • It can take only two values
  • It is always measured on a numerical scale (correct)
  • It is never used in statistical analysis
  • It can be described by words or letters

    • Why are numerical techniques not applicable to qualitative data?

    <p>Because they are not measured on a numerical scale</p> Signup and view all the answers

    What is the term for qualitative data that can take only two values?

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

    What is a characteristic of nominal data?

    <p>The categories are mutually exclusive</p> Signup and view all the answers

    What type of data is hair color?

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

    What is an example of a nominal variable?

    <p>Brand of PC</p> Signup and view all the answers

    What is the main difference between nominal and ordinal data?

    <p>Ordinal data has a logical order, while nominal data does not</p> Signup and view all the answers

    Which of the following is NOT a characteristic of nominal data?

    <p>The categories have a non-arbitrary zero point</p> Signup and view all the answers

    What type of data is marital status?

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

    What is the purpose of frequency distributions?

    <p>To summarize large volumes of data values</p> Signup and view all the answers

    What type of data requires categorization before creating a frequency distribution?

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

    What is the formula to determine the size of each class in a frequency distribution?

    <p>h = (max - min) / m</p> Signup and view all the answers

    What type of table shows the frequency or number of occurrences in each of several categories?

    <p>Frequency table</p> Signup and view all the answers

    What is the term for the number of values that occur in each class in a frequency distribution?

    <p>Absolute frequency</p> Signup and view all the answers

    What type of data is typically presented in a contingency table?

    <p>Qualitative dichotomic data</p> Signup and view all the answers

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