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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the formula for calculating a z-score?
💡 Hint: Think about how far X is from the mean.
Question 2
Easy
What percentage of data falls within 2 standard deviations of the mean?
💡 Hint: Use the empirical rule.
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 empirical rule?
💡 Hint: Remember the '68-95-99.7' rule.
Question 2
Is a z-score of 1.0 above average in a normal distribution?
- True
- False
💡 Hint: What does a z-score represent?
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A school administers a math test with scores following N(75, 10). What score corresponds to the 95th percentile?
💡 Hint: Use the formula for calculating the actual score from z-score.
Question 2
If data is skewed to the right, why is the normal distribution not suitable for this analysis?
💡 Hint: Think about the characteristics of distribution tails.
Challenge and get performance evaluation