PCED-30-02問題集、Python Institute実際の試験問題

質問 1

An e-commerce site records every product view and purchase.
Which of the following best describes how these logs become marketing insights?

A. Raw event logs are filtered, aggregated, and formatted into summaries - like total visits per category - which then provide traffic reports.

B. Raw event logs are stored, archived, and indexed - like by user ID and session - which then facilitate audit trails.

C. Raw event logs are validated, organized, and compiled into datasets - like timestamped user actions - which then support system debugging.

D. Raw event logs are structured, analyzed, and interpreted into information - like conversion rates by product - which then builds knowledge of customer preferences.

正解: D

解説: (PassTest メンバーにのみ表示されます)

質問 2

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 limits sampling to one demographic, ensuring high-quality data within a specific group.

D. It relies on observational methods, which are more accurate than surveys or sensors.

正解: A

解説: (PassTest メンバーにのみ表示されます)

質問 3

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. None

C. Error

D. False

正解: A

解説: (PassTest メンバーにのみ表示されます)

質問 4

You are writing a function named process_data()to read and process numerical input from a file. The function must:
- read the file data.txt,
- attempt to convert the first line into an integer,
- handle file, conversion, or index-related exceptions,
- print the value only if no error occurs,
- and always print a final message after execution.
Which implementation correctly and robustly meets all these conditions? Select the best answer.

A.

B.

C.

正解: C

解説: (PassTest メンバーにのみ表示されます)

質問 5

A Python script evaluates the expression len(" "). The programmer assumes it might be zero because it looks empty. What will the actual result be?

A. None

B. Error

C. 1

D. 0

正解: C

解説: (PassTest メンバーにのみ表示されます)

質問 6

A program uses slicing on a string "Python". The expression s[1:4] is evaluated. Which substring will be returned?

A. tho

B. ytho

C. yth

D. ythn

正解: C

解説: (PassTest メンバーにのみ表示されます)

Python Institute PCED - Certified Entry-Level Data Analyst with Python - PCED-30-02 模擬練習