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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Calculate the mean of the dataset: 2, 4, 6, 8, 10.
💡 Hint: Add all the numbers and divide by the total count.
Question 2
Easy
What is the variance for the sample data: 1, 2, 3?
💡 Hint: Remember to average the squared deviations from the mean.
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 does standard deviation measure?
- A) Average
- B) Variability
- C) Midpoint
💡 Hint: Think about which term relates to dispersion or spread.
Question 2
True or False: Variance can be negative.
- True
- False
💡 Hint: Consider what happens when you square a negative number.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You are given the following set of scores: 5, 6, 8, 10, and 12. Calculate the variance and standard deviation of this dataset. Provide your reasoning and steps.
💡 Hint: Follow the formula for variance closely!
Question 2
Consider the grouped data below with frequencies: Class 10-20 (3), Class 20-30 (4), Class 30-40 (5). Calculate the mean and standard deviation.
💡 Hint: Make sure to find class midpoints before calculating anything!
Challenge and get performance evaluation