Pandas MCQs with answers Page - 17

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which method is used to count non-null values in a DataFrame?

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

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which pandas method is used to apply a function element-wise on a Series?

  • (A) map()
  • (B) apply()
  • (C) transform()
  • (D) aggregate()

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which method is used to replace multiple values in a DataFrame at once?

  • (A) fillna()
  • (B) replace()
  • (C) update()
  • (D) substitute()

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which pandas function is used to read data from an Excel file?

  • (A) read_csv()
  • (B) read_excel()
  • (C) read_table()
  • (D) read_json()

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which pandas method is used to change column names in-place?

  • (A) columns()
  • (B) rename(columns=..., inplace=True)
  • (C) set_columns()
  • (D) update_columns()

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which pandas method returns the cumulative sum over a DataFrame or Series?

  • (A) cumsum()
  • (B) sum()
  • (C) cumprod()
  • (D) cummulative()

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which method is used to get the maximum value of each column in a DataFrame?

  • (A) max()
  • (B) min()
  • (C) sum()
  • (D) mean()

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which method returns the first non-null value in each column?

  • (A) first()
  • (B) first_valid_index()
  • (C) bfill()
  • (D) ffill()

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which pandas method is used to create dummy/indicator variables?

  • (A) get_dummies()
  • (B) dummy_vars()
  • (C) to_categorical()
  • (D) one_hot()

S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which method is used to drop a level from a MultiIndex in pandas?

  • (A) unstack()
  • (B) stack()
  • (C) droplevel()
  • (D) remove_level()

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