What are the advantages of python as a preferred programming language for data science?
Write a program that takes a list of words as input and returns the longest word in the list.
In EDA, why is it essential to analyze both covariance and correlation when exploring relationships between variables? Provide examples of scenarios where covariance might indicate a strong relationship while correlation might suggest otherwise.
Describe the difference between a list and a tuple in Python (Provide at- least three points).
Implement a function that takes a string as input and returns the count of each character in the string as a dictionary.
Explain how one-hot encoding is performed on a given text snippet, such as "The quick brown fox jumps over the lazy dog." What specific steps are involved in transforming this text into one-hot encoded vectors?
Describe the process of parsing an HTML document using the Beautiful Soup library in Python.
Explain the process of calculating the TF-IDF score for a term in a document with proper example.
Discuss different options to deal with missing data as part of data cleaning process.
Write code to create an undirected graph of six nodes using networkx and matplotlib.
How can we add labels, annotations and legends in our graphs using matplotlib?
Given the sample CSV file "trigonometry_data.csv" containing trigonometry data (Angle (degrees), Sine, Cosine, Tangent), how would you use Pandas to read the file in DataFrame and print the angle in degrees and its corresponding cosine value from the DataFrame? Content of “trigonometry_data.csv” file is as below. Angle (degrees), Sine, Cosine, Tangent 0,0.0,1.0,0.0 30,0.5,0.866,0.577 45,0.707,0.707,1.0 60,0.866,0.5,1.732 90,1.0,0.0,undefined
What is the importance of histogram in data visualization? Write code to create histogram using matplotlib.
Describe various methods for slicing rows and columns in a Pandas DataFrame, supported by relevant examples.
Elaborate on the concepts of sorting data row-wise, column-wise, and shuffling data within a DataFrame by providing appropriate examples.
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Official Gujarat Technological University (GTU) examination paper and step-by-step solutions for Python for Data Science (Winter 2025, B.E. · Computer Engineering, Sem 5). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
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