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3 cards from this section. Quick, good the night before a test.
What command would you use to get a summary of a DataFrame's structure?
Think about the function that gives you structural insights.
How can you get the list of columns in your DataFrame?
Look for the attribute associated with DataFrame that reveals its labels.
What function provides summary information about a DataFrame's structure?
It's a basic function for understanding data layout.
True or False: df.describe() can only be used with categorical data.
Remember what numerical summary statistics apply to.
Given a DataFrame with hundreds of rows and columns, outline how you would proceed to explore and clean the data before analysis.
Remember to consider every step in terms of shaping your dataset for modeling.
You're given a DataFrame where df.describe() shows a non-significant standard deviation for an age column. What steps should you take next?
Think about what a low variance might indicate in terms of data quality.
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