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Updated: Jun 18, 2026
No. of Questions: 146 Questions & Answers with Testing Engine
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Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) Sample Questions:
1. When creating a line chart with Matplotlib, which function is most appropriate to add a text label at a specific data point?
A) plt.title()
B) plt.xlabel()
C) plt.legend()
D) plt.annotate()
2. Which characteristics are typically associated with unstructured data formats?
(Choose two)
A) Stored using fixed-width fields and records
B) Requires parsing or transformation before analysis
C) Highly tabular and query-friendly
D) Lacks predefined data schema
3. Which method is best suited to transform inconsistent entries such as "N/A", "missing", and empty strings into a standard missing value representation in a Pandas DataFrame?
A) df.rename()
B) df.replace()
C) df.sort_values()
D) df.dropna()
4. What may occur if a model is evaluated using the same data it was trained on?
A) Underfitting
B) Overfitting
C) Data leakage
D) Overgeneralization
5. What does the standard deviation of a dataset represent in the context of statistical analysis?
A) The most frequently occurring value
B) The average squared distance from the mean
C) The number of outliers in the dataset
D) The sum of all values in the dataset
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: B,D | Question # 3 Answer: B | Question # 4 Answer: B | Question # 5 Answer: B |
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