Python Institute Certification PCAD-31-02

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

1. Which conditions typically necessitate data normalization or scaling before analysis?
(choose two)

A) Presence of duplicate data
B) Features with different units and scales
C) Distance-based modeling algorithms
D) Boolean feature encoding

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. What is the correct sequence to connect to a database and execute a query using the sqlite3 module in Python?

A) Connect → Commit → Execute → Close
B) Commit → Connect → Execute → Close
C) Execute → Connect → Commit → Close
D) Connect → Execute → Commit → Close

4. Which chart types are commonly used to represent relationships between two numerical variables in Python-based visualizations?
(choose two)
Response:

A) Scatter plot
B) Heatmap
C) Line chart
D) Histogram

5. Which practices are considered part of professional Python scripting standards?
(Choose two)

A) Using consistent indentation and naming conventions
B) Avoiding use of modules and libraries
C) Avoiding error handling to keep code clean
D) Including in-line comments and docstrings

Solutions: