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

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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:

Question #1
What is the benefit of using the __name__ == "__main__" construct in Python scripts?

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

Question #2
What is the main reason to remove duplicate records before performing analysis?

A. It reduces redundancy that can skew statistical metrics
B. It helps increase sample size
C. It avoids converting data to JSON format
D. It ensures training data is intentionally overfitted

Question #3
In a scatter plot showing the relationship between advertising spend and sales revenue, the points form a tight upward-sloping pattern. What conclusion can be drawn?

A. There is a strong positive correlation
B. The data shows no apparent relationship
C. The correlation is weak and likely negative
D. Advertising has no effect on sales

Question #4
What is one potential risk of dynamically constructing SQL queries using string concatenation in Python scripts?

A. Missing foreign key constraints
B. Exposure to SQL injection attacks
C. Slower database performance
D. Increased memory usage

Question #5
Which of the following techniques are commonly used in the standardization of textual or categorical data during preprocessing?
(Choose two)

A. Trimming whitespace from string values
B. Scaling numeric features to a fixed range
C. Applying logarithmic transformation to skewed data
D. Replacing misspellings with a canonical category label

Solutions: