Introduction to Data Analysis Quiz

Which library in Python is commonly used for data visualization and is known for its simplicity and versatility?

• NumPy

• Matplotlib

• SciPy

• TensorFlow

In Pandas, which function is used to read a CSV file into a DataFrame?

• read_excel()

• read_csv()

• read_table()

• read_json()

What is the purpose of the `dropna()` function in Pandas?

• To fill missing values

• To remove missing values

• To sort the DataFrame

• To merge two DataFrames

Which of the following is a common technique for handling missing data in a dataset?

• Ignoring the missing data

• Filling missing data with zeros

• Using the mean or median to fill missing data

• All of the above

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

• A summary of the DataFrame

• A plot of the DataFrame

• A list of column names

• A list of index values

Which of the following is a measure of central tendency?

• Variance

• Standard deviation

• Mean

• Range

In machine learning, what is the term for the data used to train a model?

• Test data

• Validation data

• Training data

• Sample data

Which Python library is primarily used for numerical computations and data manipulation?

• Pandas

• NumPy

• Matplotlib

• Seaborn

What is the output of the following NumPy operation: `np.array([1, 2, 3]) + np.array([4, 5, 6])`?

• [5, 7, 9]

• [4, 5, 6]

• [1, 2, 3]

• [0, 0, 0]

Which of the following is a type of plot that can be created using Matplotlib?

• Bar plot

• Line plot

• Scatter plot

• All of the above