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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:

Question 1

Which file formats are commonly used for hierarchical or nested data structures in data acquisition?
(Choose two)

A. XML
B. TSV
C. JSON
D. CSV

Question 2

Which of the following practices improves clarity when combining visualizations and textual explanations in a report?

A. Use visualizations alone without titles or captions
B. Avoid summarizing the data verbally
C. Repeat all numerical data in both the chart and text
D. Include concise textual summaries that highlight the chart's message

Question 3

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

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

Question 4

What is a major challenge in aggregating data from multiple sources?
Response:

A. Duplicate records and format inconsistencies
B. Overfitting in predictive models
C. Excessive disk space usage
D. Increased algorithmic complexity

Question 5

When analyzing a dataset of customer ages, you calculate the mean, median, and mode. What does it indicate if all three values are approximately equal?

A. The dataset has a normal distribution
B. The dataset is uniformly distributed
C. The dataset is positively skewed
D. The dataset contains outliers

Solutions: