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

1. What is the main reason for using try-except blocks in a data analysis script that reads multiple files?

A) To gracefully handle runtime errors without crashing the program
B) To enforce strict type annotations
C) To automatically restart the script after execution
D) To ensure functions always return None

2. Which command should a data analyst use to install the pandas library in a Python environment using the Python Package Index?

A) python get pandas
B) install pip pandas
C) python install pandas
D) pip install pandas

3. Which practices are typically part of the data integration process?
(Choose two)

A) Format standardization
B) Data encryption
C) Schema alignment
D) Neural network training

4. What is a key advantage of using the Parquet file format over CSV in large-scale data pipelines?

A) Parquet stores data in plain text, making it human-readable
B) Parquet supports schema evolution and columnar storage
C) Parquet offers row-based compression
D) Parquet files can only be used with Excel

5. Which methods can be used to validate data types and structure in a Pandas DataFrame?
(Choose two)

A) df.to_csv()
B) df.dtypes
C) df.memory_usage()
D) df.info()

Solutions: