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4 cards from this section. Quick, good the night before a test.
What is data cleaning?
Think about cleaning your room, but for data.
What does visualization help us do?
It’s like drawing a picture of your data!
What does data cleaning involve?
What do you do when you find a mistake in your homework?
True or False: Visualization helps to identify trends in data.
Think of visual charts you have seen before.
Consider a dataset with numerous fields, but some are filled with missing values. How would you approach cleaning this dataset before proceeding to analysis?
What strategies do you use when you find gaps or missing information?
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?
What do you do when a tool does not work as expected?
5 more questions in this section. Enroll free to practise them all.
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