Python Institute PCED - Certified Entry-Level Data Analyst with Python 認定 PCED-30-02 試験問題:

1. 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.strip().split(', ')
D) fields = line.replace(', ', '|').split('|')

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 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.

4. 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.

5. You are developing a temperature control module for a laboratory incubator. Your objectives are to:
- generate timestamps every 10 minutes over a 3-hour span (i.e., 0 to 180 minutes), and
- simulate five evenly spaced target temperatures between 35.0°C and 37.0°C for system calibration.
Which code snippet correctly produces both sequences using NumPy? Select the best answer.
import numpy as np

A) timestamps = np.linspace(0, 181, 10)
target_temps = np.arange(35.0, 37.0, 0.5)
import numpy a3 np
B) timestamps = np.arange(0, 180, 10)
target_temps = np.linspace(35.0, 37.0, 4)
import numpy as np
C) timestamps = np.linspace(0, 180, 10)
target_temps = np.arange(35.0, 37.0, 5)
import numpy as np
D) timestamps = np.arange(0, 181, 10)
target_temps = np.linspace(35.0, 37.0, 5)

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