pre assessment python

Which of the following is not a valid Python data type?

• List
• Tuple
• Dictionary
• ArrayList

Answer explanation

Python does not have an ArrayList type; it has lists.

Which keyword is used to define a function in Python?

• def
• function
• define
• func

Answer explanation

Python functions are defined using the 'def' keyword.

What will be the output of print(type([])) in Python?

• <class 'list'>
• <class 'tuple'>
• <class 'dict'>
• <class 'set'>

Answer explanation

The empty brackets [] define a list in Python.

Which of the following libraries is used for data manipulation in Python?

• NumPy
• Matplotlib
• Pandas
• Seaborn

Answer explanation

Pandas is the primary library for data manipulation in Python.

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

• Filter rows based on a condition
• Select data using integer location-based indexing
• Remove missing values
• Sort a DataFrame

Answer explanation

'iloc' is used for integer-location-based indexing in Pandas.

Which of the following is NOT a supervised learning algorithm?

• Linear Regression
• Logistic Regression
• k-Means Clustering
• Decision Tree

Answer explanation

k-Means Clustering is an unsupervised learning algorithm.

Which metric is commonly used to evaluate classification models?

• Mean Squared Error
• R-squared
• Accuracy
• Log Loss

Answer explanation

Accuracy is a common metric used for evaluating classification models.

Which function is used to plot a line graph in Matplotlib?

• plt.scatter()
• plt.line()
• plt.plot()
• plt.bar()

Answer explanation

'plt.plot()' is used to plot line graphs in Matplotlib.

Which of the following is not a valid Python data type?

• List
• Tuple
• Dictionary
• ArrayList

Answer explanation

Python does not have an ArrayList type; it has lists.

Which keyword is used to define a function in Python?

• def
• function
• define
• func

Answer explanation

Python functions are defined using the 'def' keyword.