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Python Institute PCED-30-02 Exam Syllabus Topics:

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

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

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

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

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

5. You have a list of test scores, where each entry includes a student name and a score. Some students appear more than once. You want to compute the average score for each student and store the results in a dictionary. Here's the partial code block:

Which code correctly replaces the # MISSING CODE comment to calculate the average score for each student? Select the best answer.

A)

B)

C)

D)

Solutions: