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最新的 Python Institute Certification PCAD-31-02 免費考試真題:

1. Which packages are most commonly used together in a data science workflow for data manipulation and visualization?
(Choose two)

A) Pygame
B) NumPy
C) flask
D) pandas

2. Which actions are considered best practices when managing datasets in Python using pandas?
(Choose two)

A) Always convert all columns to strings
B) Replace missing values with hardcoded zeros without analysis
C) Use .info() to understand dataset structure
D) Use .describe() for summary statistics

3. When merging two Pandas DataFrames using a common key, which parameters are essential to ensure accurate and conflict-free results?
(Choose two)

A) suffixes
B) dropna
C) on
D) ignore_index

4. Which of the following statements best describes the structural relationship between Pandas Series and DataFrames?

A) A Series contains multiple DataFrames
B) A DataFrame is a one-dimensional array of Series
C) A DataFrame is a two-dimensional container of Series objects
D) A Series can only be created from a DataFrame

5. Which command should a data analyst use to install the pandas library in a Python environment using the Python Package Index?

A) python get pandas
B) install pip pandas
C) python install pandas
D) pip install pandas

問題與答案：