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Python Institute PCED-30-02 Exam Syllabus Topics:

Section	Objectives
Data Analysis and Visualization	- Data visualization 1. Plot interpretation 2. Matplotlib basics - Data cleaning and preprocessing 1. Missing values handling 2. Data transformation techniques
Python Programming Fundamentals	- Basic syntax and data types 1. Control flow basics 2. Variables and operators
Basic Statistics for Data Analysis	- Descriptive statistics 1. Mean, median, mode 2. Variance and standard deviation
Data Handling and Processing with Python	- Data manipulation libraries 1. Pandas fundamentals 2. NumPy basics - Working with data structures 1. Lists, tuples, dictionaries 2. Iterating and transformations

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Python Institute PCED - Certified Entry-Level Data Analyst with Python 認定 PCED-30-02 試験問題 (Q41-Q46):

質問 # 41
Which of the following statements about Python functions are correct? (Choose two.)

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

正解：B、C

解説：
Positional arguments are matched to parameters by their position, so they must follow the defined order, while keyword arguments are matched by name and can be provided in any order. If a function completes without an explicit return statement, Python returns None automatically.

質問 # 42
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. SQL, because it directly converts tabular data into database tables that Excel can open.
B. JSON, because it stores hierarchical data and is designed for visual presentation in Excel.
C. CSV, because it stores tabular data in plain text and is compatible with spreadsheet applications.
D. XML, because it automatically preserves spreadsheet formatting and charts.

正解：C

解説：
CSV stores tabular data in a simple plain-text, comma-separated format that is widely supported by spreadsheet applications like Excel, making it ideal for sharing datasets for easy import and analysis.

質問 # 43
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. Error
B. False
C. None
D. True

正解：D

解説：
The not operator has higher precedence than and, so not False becomes True first. Then True and True is evaluated, resulting in True as the final Boolean value.

質問 # 44
A list is defined as [1, 2, 3]. The programmer uses the method .append([4, 5]). What will the resulting list look like after execution?

A. [1,2,3,4,5]
B. Error
C. [4,5,1,2,3]
D. [1,2,3,[4,5]]

正解：D

解説：
The append() method adds its argument as a single element. Therefore, the list [4, 5] is added as one nested list, resulting in [1, 2, 3, [4, 5]].

質問 # 45
A teacher wants to compare the number of students in different school clubs:

Which type of chart would be most appropriate to show this comparison? Select the best answer.

A. Bubble chart
B. Pie chart
C. Line chart
D. Bar chart

正解：D

解説：
A bar chart is best for comparing quantities across distinct categories, such as the number of students in each club, because it clearly shows differences in counts side by side.

質問 # 46
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