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DS321-BIG DATA (1)

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3. What does 'df.groupby('Course')['Final Grade'].mean()' calculate?

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5. What is the result of 'df[['Student Name', 'Final Grade']]'?

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18. Which lambda function can be used to calculate the difference between "Attendance" and "Final Grade" for each student?

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7. What is the output of 'df.dtypes' before any conversions are applied?

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12. What is the purpose of 'df['Course'] = df['Course'].astype('category')'?
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1. What is the purpose of 'df.loc[df['Final Grade'] < 60, 'Student Name']'?

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11. Which of the following is NOT a valid way to calculate the mean of a column in pandas?

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9. What is the output of 'df['Course'].unique()' after converting "Course" to a category type?

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What makes Python useful for Big Data applications?
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Which of the following is NOT a characteristic of Big Data?
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