16 Questions
What is the primary purpose of summarising data?
To simplify the analysis process
What type of measure describes how data is dispersed?
Measure of spread
How is the mean calculated?
By adding all values together and dividing by the number of values
What is the median of a dataset with an even number of values?
The average of the two middle values
What is the mode of a dataset?
The value that appears most frequently in a dataset
What is the formula for calculating the range?
Highest value - Lowest value
What is the purpose of using measures of central tendency?
To show the central position of a dataset
What is the modal class in a grouped dataset?
The group with the highest frequency
Which measure of central tendency is most affected by extreme values in a dataset?
Mean
What is the main advantage of using the median as a measure of central tendency?
It is resistant to extreme values
Which of the following is NOT a measure of central tendency?
Range
When would the mode be the most appropriate measure of central tendency to use?
When the data has multiple peaks
What is the main limitation of using the range as a measure of spread?
It is sensitive to extreme values
Which measure of central tendency would be the most affected by adding a large outlier to a dataset?
Mean
What is the main advantage of using measures of central tendency and spread together?
They provide a complete picture of the data
Which of the following is a characteristic of a measure of central tendency?
It is a single value that represents the dataset
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