4.3.2.1 - Data Cleaning
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Practice Questions
Test your understanding with targeted questions
What does data cleaning aim to achieve?
💡 Hint: Think about the importance of correct data.
Give one example of a simple error found in data.
💡 Hint: Consider mistakes we commonly make when writing.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is data cleaning?
💡 Hint: Think about the purpose of cleaning.
True or False: Handling missing values can be done by removing entries altogether.
💡 Hint: Consider different strategies for incomplete data.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Given a dataset with the following entries: (Raj, 14, M, 92), (Rita, NULL, F, 85), (Amit, 15, M, NULL), identify the actions required to clean this data.
💡 Hint: Consider how you would decide these values logically.
Analyze how maintaining duplicate entries in customer data might impact a business's marketing strategy.
💡 Hint: Think about how businesses track customer relationships.
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