Data Analysis with Python 1

Which Python library is primarily used for data manipulation and analysis?

• NumPy

• Pandas

• Matplotlib

• Seaborn

Which function in Pandas is used to check for missing values?

• .missing()

• .isnull()

• .notnull()

• .checkna()

How do you import a CSV file into a Pandas DataFrame?

• pd.open_csv('file.csv')

• pd.import_csv('file.csv')

• pd.read_csv('file.csv')

• pd.load_csv('file.csv')

Which method is used to fill missing values in a DataFrame?

• .fill()

• .fillna()

• .replace()

• .insert()

Which parameter is used in .dropna() to remove rows where all values are missing?

• how='any'

• axis=1

• how='all'

• inplace=True

Which method helps remove duplicate rows in a DataFrame?

• .drop_duplicates()

• .remove_duplicates()

• .clear_duplicates()

• .filter_duplicates()

Which of the following is used to get a quick summary of a DataFrame?

• .summary()

• .describe()

• .overview()

• .info_summary()

How do you select the first 5 rows of a DataFrame?

• .head(5)

• .first(5)

• .top(5)

• .begin(5)

Which Pandas method is used to reorder columns?

• .rearrange()

• .reindex()

• .reorder()

• .sort_columns()

Which function is used to calculate the mean of a NumPy array?

• np.mean()

• np.avg()

• np.sum()/len()

• np.average()