Exam Python Institute PCAD-31-02 Introduction, Actual PCAD-31-02 Test

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Python Institute PCAD-31-02 Exam Syllabus Topics:

Section	Weight	Objectives
Data Acquisition and Pre-Processing	29.2%
Statistical Methods and Modeling
Exploratory Data Analysis
Data Visualization and Communication
SQL and Data Management

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Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) Sample Questions (Q122-Q127):

NEW QUESTION # 122
What is the primary difference between the == operator and the is operator in Python when used in a data pipeline?

A. == compares values for equality, while is checks for object identity
B. is checks value equality, while == checks for data type compatibility
C. == checks identity, while is compares memory addresses
D. is compares dictionary keys, while == compares keys and values

Answer: A

NEW QUESTION # 123
Which operation would most efficiently apply element-wise multiplication to two NumPy arrays of equal size?

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

Answer: D

NEW QUESTION # 124
What is the benefit of using the __name__ == "__main__" construct in Python scripts?

A. It allows selective execution of code when run as a script
B. It prevents modules from being imported
C. It defines the main function in Python
D. It allows access to all global variables

Answer: A

NEW QUESTION # 125
Which features of object-oriented patterns improve clarity and reusability in Python analysis workflows?
(Choose all that apply)

A. Applying inheritance to avoid redundant code
B. Using global variables instead of object properties
C. Replacing all functions with lambda expressions
D. Encapsulating behavior in class methods

Answer: A,D

NEW QUESTION # 126
Which SQL command should a data analyst use to modify existing records in a database table based on specific conditions?

A. UPDATE
B. CREATE
C. INSERT
D. SELECT

Answer: A

NEW QUESTION # 127
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