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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does variance measure?
💡 Hint: Think about how data points are spread out.
Question 2
Easy
Provide an example of a dataset with low variance.
💡 Hint: Consider scores close to each other.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the primary purpose of calculating variance?
- To find the mean
- To measure data spread
- To determine the median
💡 Hint: Consider what variance represents.
Question 2
True or False: A variance of zero indicates a perfectly spread dataset.
- True
- False
💡 Hint: Think about what a variance of zero suggests.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a set of test scores from two different classes, Class A: [80, 85, 90, 95], Class B: [70, 90, 110, 130]. Calculate and compare the variances.
💡 Hint: Look at the range of scores in each class.
Question 2
Consider two investments: Investment X shows returns of [3%, 4%, 2%, 1%, 5%], while Investment Y shows returns of [0%, 15%, -5%, 20%]. Discuss which investment has more predictable returns based on variance.
💡 Hint: Analyze how each investment's returns are clustered.
Challenge and get performance evaluation