Pandas MCQs with answers Page - 4

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Q. How can you check for duplicate rows in a DataFrame?

  • (A) df.find_duplicates()
  • (B) df.duplicated()
  • (C) df.check_duplicates()
  • (D) df.has_duplicates()

A

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Q. Which of the following will give unique values of a column?

  • (A) df['col'].unique()
  • (B) df['col'].distinct()
  • (C) df['col'].values()
  • (D) df['col'].set()

A

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Q. Which parameter of `read_csv()` sets a specific column as the index?

  • (A) set_index
  • (B) use_index
  • (C) index_col
  • (D) row_index

A

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Q. What does `inplace=True` do in pandas?

  • (A) Returns a copy
  • (B) Modifies the original object
  • (C) Deletes the object
  • (D) Raises an error

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Q. Which method provides the correlation between numerical columns?

  • (A) df.stats()
  • (B) df.corr()
  • (C) df.analyze()
  • (D) df.mean()

A

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Q. Which method is used to count frequency of unique values in a Series?

  • (A) count()
  • (B) sum()
  • (C) value_counts()
  • (D) mode()

A

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Q. What does `df.isna().sum()` return?

  • (A) Total missing values
  • (B) Sum of all values
  • (C) Maximum missing values
  • (D) Sorted null values

A

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Q. How to rename the index in a DataFrame?

  • (A) df.set_index_name()
  • (B) df.index.name = 'new_name'
  • (C) df.rename_index()
  • (D) df.index.set_name('new_name')

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Q. Which method converts a DataFrame to a dictionary?

  • (A) df.to_map()
  • (B) df.as_dict()
  • (C) df.to_dict()
  • (D) df.convert_dict()

A

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Q. Which pandas function is used to create a time series date range?

  • (A) pd.date_range()
  • (B) pd.range_date()
  • (C) pd.dates()
  • (D) pd.time_series()

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