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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.dropna() on the foreign key column
C) Use .isin() to compare the foreign key column against the parent key column
D) Use df.sort_values() to sort both columns before merging

2. How would you extract the last three rows of a DataFrame df using position-based indexing?

A) df[-3]
B) df.tail(3)
C) df.loc[-3:]
D) df.iloc[-3:]

3. Which Python control structures are commonly used for data filtering and iterative operations in real-world analytics tasks?
(Choose two)

A) match-case statements
B) decorators
C) list comprehensions
D) while loops

4. When joining two tables in a relational database using SQL, which clause is used to specify the relationship between their columns?

A) FROM
B) GROUP BY
C) HAVING
D) JOIN ON

5. Which method is appropriate for combining two DataFrames based on a shared key column where non-matching rows should be excluded from the result?

A) append()
B) merge(..., how='inner')
C) concat()
D) join(..., how='outer')

Solutions: