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Python Institute PCED - Certified Entry-Level Data Analyst with Python Sample Questions:

1. A health researcher uses wearable devices to record physical activity and sends a survey to randomly selected participants across age groups.
Why can this approach be effective? Select the best answer.

A) It relies on observational methods, which are more accurate than surveys or sensors.
B) It limits sampling to one demographic, ensuring high-quality data within a specific group.
C) It uses unstructured interviews to validate automated tracking, improving bias detection.
D) It combines automated data collection with representative sampling, reducing the risk of bias.

2. A Python script checks membership using "a" in "apple". The developer wants to understand how membership works for strings. What result will this expression produce?

A) Error
B) False
C) True
D) None

3. Consider the following Python code:

What will be printed when the code above is executed?
40

A) [10, 20, 30, 40]
0
[1, 2, 3, 4, 5, 6]
50
B) [20, 30, 40]
1
[1, 2, 4, 5, 6]
C) [10, 20, 30, 40]
1
[1, 2, 4, 5, 6]
50
D) [20, 30, 40]
1
[1, 2, 4, 5, 6]
50

4. You are reading a data.csvfile line by line. To prepare each line for formatting with f-strings, you need to remove extra whitespace and split the values by commas.
Which line should you insert to correctly clean and parse the input?

A) fields = line.split(', ').trim()
B) fields = line.split().strip(', ')
C) fields = line.replace(', ', '|').split('|')
D) fields = line.strip().split(', ')

5. Which task is traditionally or typically performed by a data analyst, and not by a data scientist or analytics specialist? Select the best answer.

A) Recommending pricing strategies using predictive modeling and A/B testing.
B) Designing a data pipeline to ingest and process real-time sensor data.
C) Developing machine learning algorithms to predict user behavior.
D) Creating summary tables and charts to describe patterns in historical data.

Solutions: