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Ans. (i) sum()
(ii) mean()
(iii) max()
(iv) min()
46. Determine the keyword argument that should be set in different Pandas methods to perform the following
operation:
(i) To indicate that there is no header row comprising column names in the CSV file to be read in
pd.read_csv() method.
(ii) To name columns explicitly while creating DataFrame using pd.DataFrame().
(iii) To specify the list of required columns while reading csv file in Pandas DataFrame using pd.read_csv().
(iv) To specify the list of irrelevant rows while reading csv file in Pandas DataFrame using pd.read_csv().
(v) To specify the new data types in the form of a dictionary (column_name: data_type) while reading csv file
in Pandas DataFrame using pd.read_csv().
(vi) To set a column as the row labels while reading csv file in Pandas DataFrame using pd.read_csv().
(vii) To modify the original dataframe while setting a column as the index using the method DataFrame.
set_index().
(viii) To apply the sum operation row-wise across columns while invoking DataFrame.min().
Ans. (i) header
(ii) columns
(iii) usecols
(iv) skiprows
(v) dtype
(vi) index_col
(vii) Inplace
(viii) axis
47. What is open data? Name any two websites from which we can download open data.
Ans. Open
48. What do you understand by the size of a Series?
Ans. Size attribute gives the number of elements present in Series.
49. Size attribute gives the number of elements present in Series.
Ans. read_csv( )
50. Write a Python statement to store the contents of a CSV file, MANAGER.CSV into a DataFrame d1.
Ans. d1.read_csv("MANAGER.CSV")
51. How are DataFrames related to Series?
Ans. Dataframe and series both are data structures from the Pandas library.
Series is a one-dimensional structure whereas Dataframe is a two-dimensional structure.
Viva Voce Questions 339

