Study with PCAD-31-02 Actual Test Questions
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Updated: Jul 11, 2026
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Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) Sample Questions:
1. What is the purpose of using df.loc[2:5, 'column1'] in a Pandas DataFrame?
A) Returns rows 2 to 4 in 'column1'
B) Returns a new DataFrame excluding 'column1'
C) Returns the entire DataFrame
D) Returns rows 2 through 5 in 'column1'
2. What is a key advantage of using the Parquet file format over CSV in large-scale data pipelines?
A) Parquet supports schema evolution and columnar storage
B) Parquet offers row-based compression
C) Parquet stores data in plain text, making it human-readable
D) Parquet files can only be used with Excel
3. Which techniques are most effective when designing reusable and testable functions in Python?
(Choose two)
A) Creating large monolithic functions
B) Returning print statements instead of values
C) Avoiding external state or side effects
D) Use of default parameters
4. What is the main purpose of using the bootstrapping technique in inferential statistics?
A) To filter outliers from a dataset
B) To increase the number of features in a model
C) To estimate the sampling distribution by resampling with replacement
D) To validate the syntax of SQL queries in Python
5. What is a best practice when organizing data in a spreadsheet for analysis?
A) Merge cells to reduce redundancy
B) Place charts in the middle of data tables
C) Apply conditional formatting to entire rows only
D) Use consistent column headers across all sheets
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: A | Question # 3 Answer: C,D | Question # 4 Answer: C | Question # 5 Answer: D |
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