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Python Institute PCAD-31-02 Exam Syllabus Topics:

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

Question 1

What object-oriented principle allows a child class to reuse and extend the behavior of a parent class in a Python data modeling scenario?

A. Encapsulation
B. Inheritance
C. Composition
D. Abstraction

Question 2

Which file format is most suitable for exchanging large tabular datasets with consistent column data types across systems?

A. .txt
B. .xml
C. .json
D. .csv

Question 3

Which type of regression is most appropriate when the response variable is categorical, such as predicting customer churn (Yes/No)?

A. Polynomial regression
B. Decision tree regression
C. Logistic regression
D. Linear regression

Question 4

Which storage system is best suited for storing and retrieving large volumes of unstructured data, such as images or logs?

A. In-memory databases
B. Relational databases
C. Data cubes
D. Object storage systems

Question 5

Which method is appropriate for combining two DataFrames based on a shared key column where non-matching rows should be excluded from the result?

A. concat()
B. merge(..., how='inner')
C. append()
D. join(..., how='outer')

Solutions: