Pandas and Matplotlib Quiz

What is a DataFrame in Pandas?

• A two-dimensional, size-mutable, potentially heterogeneous tabular data structure with labelled axes (rows and columns).

• A one-dimensional array with axis labels.

• A three-dimensional array for storing data.

• A simple list of values.

Which of the following is a method to remove missing values in a Pandas DataFrame?

• fillna()

• dropna()

• replace()

• interpolate()

How do you plot a line graph using Matplotlib?

• plt.scatter()

• plt.bar()

• plt.plot()

• plt.hist()

Which function in Pandas is used to calculate the mean of a DataFrame column?

• mean()

• average()

• sum()

• median()

What is the purpose of the 'groupby' function in Pandas?

• To sort the DataFrame.

• To group data based on some criteria.

• To merge two DataFrames.

• To filter data based on a condition.

Which of the following is a valid way to import the Matplotlib library in Python?

• import matplotlib.pyplot as plt

• import matplotlib as plt

• import matplotlib.pyplot

• import plt.matplotlib

What does the 'describe()' function in Pandas provide?

• A summary of statistics for numerical columns.

• A list of all column names.

• A count of all unique values in a column.

• A plot of the data.

Which of the following is a method to handle duplicate data in a Pandas DataFrame?

• drop_duplicates()

• remove_duplicates()

• delete_duplicates()

• clear_duplicates()

Which of the following is a method to fill missing values in a Pandas DataFrame?

• fillna()

• dropna()

• replace()

• interpolate()

What is the default orientation of a bar plot in Matplotlib?

• Vertical

• Horizontal

• Diagonal

• Circular