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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Calculate the mean of the data set: 4, 6, 8.
💡 Hint: Add the numbers and divide by how many numbers there are.
Question 2
Easy
What is the deviation of 10 from the mean of 8?
💡 Hint: Subtract the mean from the value.
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 variance measure?
- The average
- How far data points spread out
- The median
💡 Hint: Think about what variance is calculating in relation to the mean.
Question 2
The standard deviation is the square root of which statistic?
💡 Hint: Recall the relationship between these two concepts.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A group's test scores are: 12, 15, 14, 9, 18. Calculate the variance and standard deviation, indicating the consistency of the scores.
💡 Hint: Calculate mean first, then follow through deviations and their squares.
Question 2
Given a population data set of [100, 102, 98, 120]. Calculate variance and explain what it indicates about the population.
💡 Hint: Find mean, calculate deviations and their squares before averaging.
Challenge and get performance evaluation