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

1. A program compares two values using == and is. The variables a = 256 and b = 256 are defined.
What is the expected result of a is b in most Python implementations?

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

2. You want to safely read the contents of a file named records.txtand store them in a list. Your requirements are:
- The file should be automatically closed after reading,
- The code should check whether the file exists before opening it, and
- It should handle missing file errors gracefully.
Which of the following is the most appropriate way to accomplish this task in Python? Select the best answer.

A)

B)

C)

D)

3. A program uses while False: followed by print statements inside the loop. The developer expects output. What will actually happen during execution?

A) Infinite loop
B) Prints once
C) Error
D) No execution

4. A Python script includes the expression not False and True. The developer is unsure how logical operators are evaluated in terms of precedence. What will be the final Boolean result of this expression?

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

5. How do the analysis and visualization stages of the data lifecycle typically work together?

A) Analysis summarizes archived data, and visualization transforms it into structured tables for storage.
B) Analysis produces charts and graphs, while visualization interprets the data to detect outliers.
C) Analysis identifies patterns and insights in processed data, which are then communicated through visualizations for informed decision-making.
D) Analysis retrieves raw inputs from dashboards, while visualization uses that input to clean the data.

Solutions: