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Python Institute PCAD-31-02 Exam Syllabus Topics:

Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) Sample Questions:

1. What does the standard deviation of a dataset represent in the context of statistical analysis?

A) The average squared distance from the mean
B) The most frequently occurring value
C) The sum of all values in the dataset
D) The number of outliers in the dataset

2. How would you extract the last three rows of a DataFrame df using position-based indexing?

A) df.iloc[-3:]
B) df[-3]
C) df.tail(3)
D) df.loc[-3:]

3. Which approaches help tailor data visualizations for non-technical stakeholders?
(Choose two)

A) Focus on trend and summary metrics
B) Use jargon-rich annotations
C) Add context through narrative or titles
D) Use raw code outputs for clarity

4. Which technique would be most appropriate to handle missing numerical values in a dataset intended for machine learning?

A) Dropping all columns
B) Imputation using mean or median
C) Replacing with NULL
D) Filling with random values

5. Which Python feature allows the reuse of logic in different data processing steps, reducing duplication and improving maintainability?

A) Custom functions
B) Lambda functions
C) Global variables
D) Tuple unpacking

Solutions: