Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) - PCAD-31-02 FREE EXAM DUMPS QUESTIONS & ANSWERS]

Question 1

What is the function of the melt() operation in Pandas when reshaping wide-format data?

A. Converts column values into rows B. Combines multiple DataFrames C. Transposes the DataFrame D. Sorts the DataFrame based on a column

Discussion 0

Correct Answer: A Vote an answer

Question 2

You have a list of product prices, and you need to remove duplicate values while maintaining the fastest performance. Which core data structure should you use?

A. set B. list C. dictionary D. tuple

Discussion 0

Correct Answer: A Vote an answer

Question 3

What is the primary advantage of using web scraping as a data collection method in business analytics?

A. It eliminates the need for data cleaning B. It guarantees real-time data accuracy C. It allows automation of data collection from public sources D. It ensures compliance with privacy laws

Discussion 0

Correct Answer: C Vote an answer

Question 4

Which of the following techniques are commonly used in the standardization of textual or categorical data during preprocessing?
(Choose two)

A. Scaling numeric features to a fixed range B. Replacing misspellings with a canonical category label C. Applying logarithmic transformation to skewed data D. Trimming whitespace from string values

Discussion 0

Correct Answer: B,D Vote an answer

Question 5

Which operations are valid when working with Pandas Series?
(Choose two)

A. Applying NumPy universal functions B. Using .columns to rename C. Merging by index using merge() D. Arithmetic vector operations

Discussion 0

Correct Answer: A,D Vote an answer

Question 6

Which actions are considered best practices when managing datasets in Python using pandas?
(Choose two)

A. Replace missing values with hardcoded zeros without analysis B. Use .info() to understand dataset structure C. Always convert all columns to strings D. Use .describe() for summary statistics

Discussion 0

Correct Answer: B,D Vote an answer

Question 7

What is the main advantage of using Seaborn over Matplotlib when creating complex statistical visualizations in Python?

A. Seaborn provides high-level abstractions for attractive and informative graphics B. Seaborn automatically saves plots as image files C. Seaborn works exclusively with NumPy arrays D. Seaborn requires no data preprocessing for missing values

Discussion 0

Correct Answer: A Vote an answer