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3. What does 'df.groupby('Course')['Final Grade'].mean()' calculate?
5. What is the result of 'df[['Student Name', 'Final Grade']]'?
18. Which lambda function can be used to calculate the difference between "Attendance" and "Final Grade" for each student?
7. What is the output of 'df.dtypes' before any conversions are applied?
1. What is the purpose of 'df.loc[df['Final Grade'] < 60, 'Student Name']'?
11. Which of the following is NOT a valid way to calculate the mean of a column in pandas?
9. What is the output of 'df['Course'].unique()' after converting "Course" to a category type?
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