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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. What is the most appropriate way to ensure that a column used as a foreign key contains only valid references to a parent DataFrame in Pandas?

A) Use df.merge() with how='outer'
B) Use df.sort_values() to sort both columns before merging
C) Use .isin() to compare the foreign key column against the parent key column
D) Use df.dropna() on the foreign key column

2. 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) Construct queries using f-strings for readability
C) Limit database user permissions to only necessary operations
D) Store credentials securely using environment variables

3. Which actions are valid techniques for handling erroneous categorical values in a dataset?
(Choose two)

A) Normalizing using min-max scaling
B) Replacing inconsistent labels with a standardized value
C) Converting all values to integers
D) Removing rows with invalid labels

4. Which of the following are limitations of manual data collection methods?
(Choose two)

A) Time-consuming process
B) High scalability
C) Seamless integration with big data tools
D) Increased chance of human error

5. Which features are commonly supported by both Matplotlib and Seaborn for customizing visualizations?
(Choose two)

A) Automatic plot animations
B) Changing plot color palettes
C) Inserting audio annotations
D) Adding plot titles and axis labels

Solutions: