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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is data cleaning?
💡 Hint: Think about cleaning your room, but for data.
Question 2
Easy
What does visualization help us do?
💡 Hint: It’s like drawing a picture of your data!
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 data cleaning involve?
- Removing errors from data
- Adding more data
- Randomizing data
💡 Hint: What do you do when you find a mistake in your homework?
Question 2
True or False: Visualization helps to identify trends in data.
- True
- False
💡 Hint: Think of visual charts you have seen before.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Consider a dataset with numerous fields, but some are filled with missing values. How would you approach cleaning this dataset before proceeding to analysis?
💡 Hint: What strategies do you use when you find gaps or missing information?
Question 2
Imagine you have performed feature selection using correlation and found that certain features are weakly correlated with your target variable. What steps could you take next?
💡 Hint: What do you do when a tool does not work as expected?
Challenge and get performance evaluation