Statistics and Measures of Central Tendency

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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?

Median Signup and view all the answers

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

61 Signup and view all the answers

What is the average value of a set of scores?

Mean Signup and view all the answers

How is the mode identified in a set of scores?

By finding the score with the highest frequency Signup and view all the answers

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

∑fx/N Signup and view all the answers

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

Mode Signup and view all the answers

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

Histogram Signup and view all the answers

What is the term for a distribution with two modes?

Bimodal Signup and view all the answers

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

68 Signup and view all the answers

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

Because it is influenced by the outliers in the distribution Signup and view all the answers

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

It is less affected by extreme scores Signup and view all the answers

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

The distribution of scores has a high frequency of a particular score Signup and view all the answers

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

The distribution of scores is positively or negatively skewed Signup and view all the answers

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

It only provides a rough idea of the distribution of scores Signup and view all the answers

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

Because it is heavily influenced by extreme scores Signup and view all the answers