3 - Measures of Dispersion
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Practice Questions
Test your understanding with targeted questions
Calculate the range of the following dataset: {5, 10, 15, 20, 25}.
💡 Hint: Subtract the minimum value from the maximum value.
What does a higher variance indicate?
💡 Hint: Think about how variance is calculated.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is variance?
💡 Hint: Think about how variance reflects overall data variability.
True or False: Standard deviation is always larger than range.
💡 Hint: Consider the definitions of both terms.
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Challenge Problems
Push your limits with advanced challenges
A dataset has these values: {15, 22, 17, 30, 25}. Calculate the variance and standard deviation.
💡 Hint: Start with calculating the mean before proceeding with the deviation.
Explain how changing a single score in a dataset from 20 to 50 will affect the range, variance, and standard deviation.
💡 Hint: Consider the implications of extremes on spread.
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