最新的Python Institute PCAD-31-02免費考試真題

問題1

What is the primary purpose of using annotations in a data visualization?

A. To enhance interactivity in static plots

B. To highlight important data points and provide contextual information

C. To replace the need for axes

D. To ensure faster rendering in large datasets

正確答案: B

問題2

Which Pandas methods are commonly used to extract central tendency and dispersion insights from a DataFrame?
(Choose two)

A. pivot_table()

B. sort_values()

C. var()

D. median()

正確答案: C,D

問題3

Which function is used to reshape a NumPy array without modifying the original data values?

A. flatten()

B. transpose()

C. resize()

D. reshape()

正確答案: D

問題4

Which features are commonly supported by both Matplotlib and Seaborn for customizing visualizations?
(Choose two)

A. Automatic plot animations

B. Inserting audio annotations

C. Adding plot titles and axis labels

D. Changing plot color palettes

正確答案: C,D

問題5

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

A. Use .info() to understand dataset structure

B. Always convert all columns to strings

C. Use .describe() for summary statistics

D. Replace missing values with hardcoded zeros without analysis

正確答案: A,C

問題6

Which type of chart is most appropriate when comparing the distribution of a numerical variable across multiple categories?

A. Box plot

B. Line chart

C. Scatter plot

D. Pie chart

正確答案: A

問題7

Which best practices help enhance database security when building Python data analysis pipelines?
(Choose two)

A. Construct queries using f-strings for readability

B. Store credentials securely using environment variables

C. Sanitize input by replacing dangerous characters with asterisks

D. Limit database user permissions to only necessary operations

正確答案: B,D

最新的Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) - PCAD-31-02免費考試真題

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