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

1. Which of the following improves the readability of a spreadsheet used for collaborative data analysis?

A) Converting numeric values into images
B) Removing gridlines from all sheets
C) Adding freeze panes to lock header rows
D) Using colored fonts to highlight every cell

2. What is the correct SQL statement to permanently remove a table named customers from a database?

A) DELETE TABLE customers;
B) REMOVE TABLE customers;
C) DROP TABLE customers;
D) TRUNCATE TABLE customers;

3. Which method in the pandas library allows efficient loading of large datasets in chunks to conserve memory?

A) read_csv(chunksize=...)
B) fetch_chunks()
C) import_csv()
D) load_dataset()

4. When creating a line chart with Matplotlib, which function is most appropriate to add a text label at a specific data point?

A) plt.legend()
B) plt.annotate()
C) plt.title()
D) plt.xlabel()

5. Which practices help maintain data integrity across large datasets in Pandas workflows?
(Choose two)

A) Automatically converting all text to uppercase
B) Using assertions to enforce domain-specific rules
C) Sorting columns alphabetically
D) Defining and enforcing schema constraints

Solutions: