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

1. 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) list
B) set
C) dictionary
D) tuple

2. Which characteristics are commonly associated with cloud-based data storage solutions?

A) Elastic scalability
B) High availability and redundancy
C) Requires dedicated local hardware
D) Physical proximity to user machines

3. What is the main reason to remove duplicate records before performing analysis?

A) It avoids converting data to JSON format
B) It reduces redundancy that can skew statistical metrics
C) It ensures training data is intentionally overfitted
D) It helps increase sample size

4. Which of the following best describes the use of relational databases in analytics?

A) Cannot enforce schema
B) Suitable for managing tabular structured data
C) Used only for image processing
D) Best for real-time log ingestion

5. 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) Applying logarithmic transformation to skewed data
C) Trimming whitespace from string values
D) Replacing misspellings with a canonical category label

Solutions: