Measures of Central Tendency: Ungrouped Data
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Questions and Answers

What is the mode in the series of numbers: 3, 4, 5, 5, 6, 7, 8, 8, 8, 9?

  • 6
  • 9
  • 8 (correct)
  • 7

    • In ungrouped data, how is the mode typically found?

  • By calculating the mean
  • Using the median
  • Through interpolation
  • By inspection (correct)

    • For continuous data, how is the modal class determined?

  • The class nearest to the mean
  • The class with the highest frequency (correct)
  • The class with the lowest frequency
  • The class with the widest range

    • What is a key merit of using mode as a measure of central tendency?

    <p>It is resistant to extreme values</p> Signup and view all the answers

    What is a notable drawback of using mode in statistical analysis?

    <p>It is not based on all observations</p> Signup and view all the answers

    In determining a percentile, what does the rank represent?

    <p>The position of the data point in the set</p> Signup and view all the answers

    What additional step is required when the rank of a percentile is not an integer?

    <p>Perform interpolation between the floor and ceiling ranks</p> Signup and view all the answers

    What does the range measure in analyzing ungrouped data?

    <p>The dispersion of data points</p> Signup and view all the answers

    How is the variance calculated for ungrouped data?

    <p>By taking the sum of the squared deviations from the mean</p> Signup and view all the answers

    What does the standard deviation provide a measure of?

    <p>How much the data deviates from the mean</p> Signup and view all the answers

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