最新のPCED-30-02問題集で試験を準備する

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)

A data analyst exports a cleaned dataset from Python and wants to share it with a colleague for easy use in Excel.
Which file format is best suited for this purpose? Select the best answer.

• A. JSON, because it stores hierarchical data and is designed for visual presentation in Excel.
• B. XML, because it automatically preserves spreadsheet formatting and charts.
• C. CSV, because it stores tabular data in plain text and is compatible with spreadsheet applications.
• D. SQL, because it directly converts tabular data into database tables that Excel can open.

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.

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.
  

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.