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

1. What is the primary role of the pandas library in the Python data science ecosystem?

A) Visualizing large datasets
B) Performing statistical tests
C) Reducing execution time of compiled code
D) Manipulating labeled data structures

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

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

3. What is a key assumption of linear regression that distinguishes it from logistic regression?

A) The target variable is unordered categorical
B) Output values must be binary
C) Predictors must be independent
D) The relationship between predictors and the outcome is linear

4. Which Python library is most commonly used to establish a connection to a SQLite database and perform SQL operations?

A) psycopg2
B) sqlalchemy
C) pymysql
D) sqlite3

5. Which of the following are limitations of manual data collection methods?
(Choose two)

A) Seamless integration with big data tools
B) Increased chance of human error
C) High scalability
D) Time-consuming process

Solutions: