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Exam Code: PCAD-31-02

Exam Name: Python Institute Certified Associate Data Analyst with Python (PCAD-31-02)

Updated: Jul 01, 2026

Number: 146 Q&As with Testing Engine

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

1. Which operation would most efficiently apply element-wise multiplication to two NumPy arrays of equal size?

A) numpy.outer()
B) array1.dot(array2)
C) array1 * array2
D) numpy.matrix()

2. Which method is best suited to transform inconsistent entries such as "N/A", "missing", and empty strings into a standard missing value representation in a Pandas DataFrame?

A) df.replace()
B) df.rename()
C) df.dropna()
D) df.sort_values()

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

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

4. Which Python feature allows the reuse of logic in different data processing steps, reducing duplication and improving maintainability?

A) Global variables
B) Tuple unpacking
C) Custom functions
D) Lambda functions

5. 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

Solutions:

Question # 1
Answer: C

Question # 2
Answer: A

Question # 3
Answer: B,D

Question # 4
Answer: C

Question # 5
Answer: B,C

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