Measures of Spread (VCE SSCE General Mathematics): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does a measure of spread quantify about a data set?
What does a measure of spread quantify about a data set?
How spread out the values are
What is the formula for calculating the range ?
What is the formula for calculating the range ?
What is the critical weakness of the range as a measure of spread?
What is the critical weakness of the range as a measure of spread?
Heavily influenced by outliers
What does the interquartile range (IQR) measure?
What does the interquartile range (IQR) measure?
Spread of middle 50% of data
What percentage of observations are below ?
What percentage of observations are below ?
75%
What is the formula for the interquartile range?
What is the formula for the interquartile range?
What does standard deviation measure spread around?
What does standard deviation measure spread around?
The mean
Why are deviations squared in the standard deviation formula?
Why are deviations squared in the standard deviation formula?
Deviations sum to zero otherwise
When is the IQR most appropriate to use?
When is the IQR most appropriate to use?
Data contains outliers
When is standard deviation the most appropriate measure of spread?
When is standard deviation the most appropriate measure of spread?
Distribution is roughly symmetric