10.x.2 - Variance
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Practice Questions
Test your understanding with targeted questions
What does variance measure?
💡 Hint: Think about how spread out the data is.
What is the standard deviation in relationship to variance?
💡 Hint: Recall the formula connecting the two.
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Interactive Quizzes
Quick quizzes to reinforce your learning
Variance provides insights into:
💡 Hint: Think about what variance tells you about data.
Standard deviation is the square root of:
💡 Hint: Consider how the concepts are connected.
1 more question available
Challenge Problems
Push your limits with advanced challenges
You have the following measurements of a mechanical component's diameter: 10.2, 10.4, 10.1, 10.3, 10.5. Calculate the variance and interpret what it means for quality control.
💡 Hint: Find the mean first and square deviations!
You are analyzing the daily rainfall (in cm) over a month: 1.0, 2.2, 0, 1.5, 3.1, 0, 2.0, 1.8, 0.5, 1.0, 2.5, 0.3. Calculate variance. What does this tell you about the variability of rainfall?
💡 Hint: Remember to compute the mean rainfall first!
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