Practice - Standardization Process
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Practice Questions
Test your understanding with targeted questions
What is the Z-score for X = 130 if X ~ N(120, 10)?
💡 Hint: Remember, Z is calculated as (X - μ) / σ.
What does a Z-score of 0 signify?
💡 Hint: Think about the position relative to the average.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does standardizing a normal variable help us achieve?
💡 Hint: Think about the purpose of the Z-table.
True or False: When a Z-score is negative, it means the value is above the mean.
💡 Hint: Reflect on the Z-score definition.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
A dataset has a mean of 150 and a standard deviation of 30. Find the Z-score for a value of 180 and interpret it.
💡 Hint: Standardize to interpret the position relative to the mean.
If a student needs to be in the top 10% for a test scored normally distributed with a mean 75 and a standard deviation of 10, what score must they achieve?
💡 Hint: Use Z-tables for percentile lookup.
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