Prepare with Python Institute PCAD-31-02 exam practice material, pass for sure
Updated: Jul 08, 2026
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Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) Sample Questions:
1. Which function is used to reshape a NumPy array without modifying the original data values?
A) transpose()
B) resize()
C) flatten()
D) reshape()
2. Why is it important to use a test dataset separate from the training dataset when evaluating a machine learning model?
A) To reduce the number of iterations during training
B) To ensure the loss function is minimized
C) To optimize the model's training accuracy
D) To evaluate the model's performance on unseen data
3. When analyzing a sales dataset using Pandas, which of the following techniques help extract key insights by grouping and summarizing the data?
(Choose two)
A) Using fillna() to replace missing product prices
B) Using groupby() to compute total sales per region
C) Using rename() to change column headers
D) Applying agg() to calculate multiple metrics like mean and max
4. Which file format is most suitable for exchanging large tabular datasets with consistent column data types across systems?
A) .xml
B) .csv
C) .txt
D) .json
5. When performing bootstrapping on a dataset with 500 observations, what is a typical procedure?
A) Generating multiple datasets of the same size by randomly sampling with replacement
B) Creating samples by removing all duplicates
C) Scaling all values between 0 and 1 before resampling
D) Drawing one sample and calculating the mean only once
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: D | Question # 3 Answer: B,D | Question # 4 Answer: B | Question # 5 Answer: A |
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