Practice - Data Preparation and Cleaning
Practice Questions
Test your understanding with targeted questions
What is data transcription?
💡 Hint: Think about how we make raw data usable in statistical software.
Why is error checking important in data preparation?
💡 Hint: Consider what happens if mistakes go unnoticed.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the first step in data preparation?
💡 Hint: Think about how data starts its journey in research.
True or False: Imputation is always a better method than exclusion when dealing with missing data.
💡 Hint: Consider when each method may be appropriate.
1 more question available
Challenge Problems
Push your limits with advanced challenges
You have a dataset with 30% of its values missing. Discuss how you would evaluate the impact of this missing data on your research conclusions.
💡 Hint: How does the missingness relate to the study design?
Analyze the effect of outliers on a linear regression model and suggest a method for addressing them.
💡 Hint: What methods exist that minimize the influence of outliers?
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Reference links
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