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

1. A Python developer is testing truth values of different data types using the bool() function. The expression bool([0]) is evaluated in the script. What result should be expected when this expression is printed?

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

2. You are working with city names entered by users. These names may contain inconsistent capitalization and unwanted spaces.
To standardize the data, you want to:
- Remove any leading or trailing whitespace, and
- Capitalize the first letter of each word (e.g., convert "new york" to "New York").
For example:
" New york " → "New York"
"lOS ANGELES" → "Los Angeles"
You are given a variable citythat contains the raw input.
Which line of code correctly updates the value of cleaned_cityto apply the required transformation? Select the best answer.

A) cleaned_city = city.upper().replace(" ", "")
B) cleaned_city = city.upper().strip()
C) cleaned_city = city.strip().capitalize()
D) cleaned_city = city.strip().title()

3. A government agency collects citizen data for various public services.
What is the primary reason for emphasizing careful data management throughout the entire data lifecycle in this context? Select the best answer.

A) To uphold data quality for effective service delivery, safeguard citizen privacy and prevent misuse, and comply with data protection laws.
B) To guarantee the long-term availability and integrity of crucial citizen datasets for future policy formulation and evaluation.
C) To streamline the initial capture of citizen details and minimize the administrative burden on both staff and the public.
D) To enable seamless sharing of anonymized citizen information with other governmental bodies for collaborative initiatives.

4. Which of the following statements about Python functions are correct? (Choose two.)

A) passexecutes the function body and returns its result.
B) Functions can only return numeric values or strings.
C) A function cannot call itself or be passed as an argument to itself.
D) Default parameters must always come before required ones in the parameter list.
E) Positional arguments must be passed in the order defined, while keyword arguments can be passed in any order using their parameter names.
F) If a function does not contain a returnstatement, it returns Noneby default.

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

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

Solutions: