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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:

1. Which best practices help enhance database security when building Python data analysis pipelines?
(Choose two)

A) Sanitize input by replacing dangerous characters with asterisks
B) Store credentials securely using environment variables
C) Limit database user permissions to only necessary operations
D) Construct queries using f-strings for readability

2. What is the recommended Python library to connect and extract tabular data directly from an Excel file?

A) csv
B) matplotlib
C) sqlite3
D) openpyxl

3. Which refinements are typically used to enhance clarity and presentation quality in visualizations?
(Choose two)

A) Customizing tick labels
B) Disabling grid lines in all cases
C) Avoiding color entirely
D) Adding descriptive axis labels

4. Which technique would be most appropriate to handle missing numerical values in a dataset intended for machine learning?

A) Imputation using mean or median
B) Dropping all columns
C) Replacing with NULL
D) Filling with random values

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

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

Solutions: