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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a Z-Score?
💡 Hint: Think about its role in identifying how unusual a value is.
Question 2
Easy
In simple terms, why do we care about outliers?
💡 Hint: Consider how they affect averages and relationships.
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 a Z-Score represent?
- How high a temperature is
- The probability of an event
- The distance from the mean in standard deviations
💡 Hint: Remember the purpose of Z-Scores.
Question 2
True or False: A Z-Score above 3 indicates an outlier in most cases.
- True
- False
💡 Hint: Think about the statistical norms.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You have a set of data points: [12, 15, 15, 19, 40]. Calculate the mean, standard deviation, and Z-Scores. Determine if any outliers exist.
💡 Hint: Use the mean and standard deviation formulas first.
Question 2
In a dataset where the mean income is $50,000 and the standard deviation is $10,000, what is the Z-Score for an income of $80,000? Identify if it’s an outlier.
💡 Hint: Apply the Z-Score formula carefully.
Challenge and get performance evaluation