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

1. Which data collection method is most appropriate when gathering opinions from a target audience at scale?

A) Transactional data
B) Web scraping
C) Sensor logs
D) Surveys

2. What is the main purpose of validating a dataset before applying statistical analysis?

A) To visualize patterns more clearly
B) To sort the data alphabetically
C) To ensure the dataset meets expected quality and structure
D) To generate more columns from the dataset

3. Which techniques can be used to select a subset of rows and columns from a DataFrame using labels?
(Choose two)

A) df.loc[:, 'col1']
B) df.iloc[0:5, 'col2']
C) df.loc[2:7, ['col1', 'col2']]
D) df['col1', 'col2']

4. Which packages are most commonly used together in a data science workflow for data manipulation and visualization?
(Choose two)

A) pandas
B) flask
C) Pygame
D) NumPy

5. What is the correct sequence to connect to a database and execute a query using the sqlite3 module in Python?

A) Commit → Connect → Execute → Close
B) Execute → Connect → Commit → Close
C) Connect → Execute → Commit → Close
D) Connect → Commit → Execute → Close

Solutions: