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Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) Sample Questions:

1. Which of the following are limitations of manual data collection methods?
(Choose two)

A) High scalability
B) Time-consuming process
C) Increased chance of human error
D) Seamless integration with big data tools

2. What is the main purpose of defining a class when working with complex data structures in a Python-based analysis project?

A) To define global variables that persist across files
B) To ensure all values are stored as plain strings
C) To avoid using loops and conditional logic
D) To encapsulate related data and behavior for better organization

3. Which operations are valid and commonly used on Python lists during data transformation tasks?
(Choose two)

A) Index-based iteration
B) Slicing
C) Append
D) Key-value mapping

4. Which of the following would most likely be classified as unstructured data?

A) Product ID and price list in a CSV
B) Inventory levels in a spreadsheet
C) Collection of customer service audio recordings
D) Normalized employee database in PostgreSQL

5. Why is min-max scaling applied before using algorithms like K-Nearest Neighbors or SVM?

A) To prevent features with larger scales from dominating distance calculations
B) To convert strings into numeric values
C) To compress all values into integers
D) To make all features interpretable as binary values

Solutions: