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

1. A student writes a program using input() to collect user data, then tries to add 5 to the input value without conversion. The program crashes. What is the most likely cause of this behavior?

A) input returns int
B) input returns float
C) input returns string
D) Syntax error

2. A programmer writes a script to test operator precedence using the expression 3 + 4 * 2 ** 2. The goal is to evaluate the result correctly based on Python's operator hierarchy rules. What result should the script produce?

A) 49
B) 28
C) 35
D) 19

3. Below are six possible summaries for your presentation:
- Summary 1: "The data revealed a moderate positive correlation between age and recycling frequency. While 72% of students reported recycling paper regularly, only 39% reported recycling plastic."
- Summary 2: "Analysis showed notable differences in recycling habits by material type, with paper being most recycled and plastic least recycled."
- Summary 3: "Older kids recycled more than younger ones. Paper was the most recycled item- plastic got forgotten a lot."
- Summary 4: "Student responses showed positive environmental habits overall, though participation varied by waste type."
- Summary 5: "A lot of students said they recycle. Some didn't answer every question, so we couldn't figure out everything."
- Summary 6: "We asked more than 300 students about recycling. Most said they recycle paper, but way fewer recycle plastic." Which communication style is the best fit for Group A (data scientists) and Group B (12-year- olds), respectively? Select the best answer.

A) Summary 2 for Group A. Summary 6 for Group B
B) Summary 1 for Group A, Summary 3 for Group B
C) Summary 6 for Group A, Summary 3 for Group B
D) Summary 4 for Group A, Summary 3 for Group B
E) Summary 1 for Group A, Summary 6 for Group B
F) Summary 6 for Group A, Summary 5 for Group B

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

5. A dictionary is defined as d = {"a":1, "b":2}. The programmer accesses d["c"]. What happens when this line executes?

A) Returns None
B) Raises KeyError
C) Returns 0
D) Adds key automatically

Solutions: