Exam Name: Python Institute Certified Associate Data Analyst with Python (PCAD-31-02)
Certification Provider: Python Institute
Corresponding Certification: Python Institute Certification
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Python Institute PCAD-31-02 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Acquisition and Preprocessing | 30% | - Data cleaning and validation
|
| Topic 2: Data Exploration and Statistical Analysis | 25% | - Inferential statistics
|
| Topic 3: Data Visualization and Communication | 15% | - Visualization with Matplotlib and Seaborn
|
| Topic 4: SQL and Database Integration | 10% | - Relational database concepts
|
| Topic 5: Data Modeling and Machine Learning Basics | 20% | - Model performance and optimization
|
Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) Sample Questions:
Which actions are considered part of basic data validation tasks in Python using Pandas?
(Choose two)
- A. Checking for duplicate rows
- B. Replacing NULL values with placeholders
- C. Sorting the data frame by index
- D. Confirming numeric columns contain only integers
Correct Answer: A,D 🗳️
When creating a line chart with Matplotlib, which function is most appropriate to add a text label at a specific data point?
- A. plt.legend()
- B. plt.xlabel()
- C. plt.annotate()
- D. plt.title()
Correct Answer: C 🗳️
What is a major challenge in aggregating data from multiple sources?
Response:
- A. Duplicate records and format inconsistencies
- B. Increased algorithmic complexity
- C. Excessive disk space usage
- D. Overfitting in predictive models
Correct Answer: A 🗳️
Which Python library is most commonly used to establish a connection to a SQLite database and perform SQL operations?
- A. sqlalchemy
- B. sqlite3
- C. psycopg2
- D. pymysql
Correct Answer: B 🗳️
Which of the following are key differences between Pandas and NumPy arrays?
(Choose two)
- A. NumPy supports string indexing; Pandas does not
- B. Pandas integrates better with tabular data and missing values
- C. Pandas Series are more memory efficient than NumPy arrays
- D. Pandas handles labeled data; NumPy does not
Correct Answer: B,D 🗳️
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