Statistics and Measures of Central Tendency
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Questions and Answers

What is the purpose of organizing and managing raw scores?

  • To make a quick and accurate conclusion about student achievement (correct)
  • To make the marking process more efficient
  • To create a question bank
  • To calculate the difficulty index

What is the main purpose of using the mean in measuring central tendency?

  • To find the median of a set of scores
  • To ignore the lowest scores in a distribution
  • To identify the highest score in a distribution
  • To compare performance between individuals and groups (correct)

What is the arrangement of raw scores in a set of marks called?

  • Difficulty index
  • Frequency distribution
  • Distribution of scores (correct)
  • Question bank

What is the middle value in a set of scores when they are arranged in order?

<p>Median (A)</p> Signup and view all the answers

What is the median in a set of scores 45, 45, 58, 61, 69, 77, 79?

<p>61 (C)</p> Signup and view all the answers

What is the average value of a set of scores?

<p>Mean (C)</p> Signup and view all the answers

How is the mode identified in a set of scores?

<p>By finding the score with the highest frequency (C)</p> Signup and view all the answers

What is the formula to calculate the mean in a frequency distribution?

<p>∑fx/N (B)</p> Signup and view all the answers

What is the value that appears most frequently in a set of scores?

<p>Mode (D)</p> Signup and view all the answers

What is the graphical representation of data used to show the distribution of scores?

<p>Histogram (A)</p> Signup and view all the answers

What is the term for a distribution with two modes?

<p>Bimodal (A)</p> Signup and view all the answers

What is the median of a set of scores 50, 57, 64, 72, 77, 77?

<p>68 (A)</p> Signup and view all the answers

Why is the mean value more sensitive to extreme scores in a distribution?

<p>Because it is influenced by the outliers in the distribution (B)</p> Signup and view all the answers

What is the main advantage of using the median in a skewed distribution?

<p>It is less affected by extreme scores (D)</p> Signup and view all the answers

What is the primary condition for using the mode as a measure of central tendency?

<p>The distribution of scores has a high frequency of a particular score (D)</p> Signup and view all the answers

What can be inferred from the mean, median, and mode of a skewed distribution?

<p>The distribution of scores is positively or negatively skewed (C)</p> Signup and view all the answers

What is the main disadvantage of using the median as a measure of central tendency?

<p>It only provides a rough idea of the distribution of scores (A)</p> Signup and view all the answers

Why is the mean less suitable for comparing performance between two groups with skewed distributions?

<p>Because it is heavily influenced by extreme scores (B)</p> Signup and view all the answers

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