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WithoutBook LIVE Mock Interviews Python Pandas Related interview subjects: 13

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Know the top Python Pandas interview questions and answers for freshers and experienced candidates to prepare for job interviews.

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Ques 1

Explain the pivot_table function in Pandas.

pivot_table is used to create a spreadsheet-style pivot table as a DataFrame.

Example:

pd.pivot_table(df, values='value', index='index_column', columns='column_to_pivot')
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Ques 3

Explain the use of the transform() function in Pandas.

transform() is used to perform group-specific computations and return a DataFrame with the same shape as the input.

Example:

df['normalized_column'] = df.groupby('group_column')['value_column'].transform(lambda x: (x - x.mean()) / x.std())
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