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Python Institute PCAD-31-02 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Acquisition and Preprocessing | 30% | - Data collection, integration and storage
|
| Topic 2: Data Exploration and Statistical Analysis | 25% | - Inferential statistics
|
| Topic 3: SQL and Database Integration | 10% | - Python-database connectivity
|
| Topic 4: Data Visualization and Communication | 15% | - Visualization principles and best practices
|
| 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:
1. Which method is typically used in Pandas to check if a column contains only values within an expected range?
A) df.clip()
B) df.isin()
C) df.sort_values()
D) df.sample()
2. When performing bootstrapping on a dataset with 500 observations, what is a typical procedure?
A) Scaling all values between 0 and 1 before resampling
B) Creating samples by removing all duplicates
C) Drawing one sample and calculating the mean only once
D) Generating multiple datasets of the same size by randomly sampling with replacement
3. When working with relational databases in Python, what are key components required to establish and manage database connections?
(Choose all that apply)
A) Connection object to interface with the database
B) Database driver or module (e.g., sqlite3)
C) Cursor object for executing queries
D) Python's random module for generating keys
4. Which best practices help enhance database security when building Python data analysis pipelines?
(Choose two)
A) Limit database user permissions to only necessary operations
B) Store credentials securely using environment variables
C) Construct queries using f-strings for readability
D) Sanitize input by replacing dangerous characters with asterisks
5. Which operations are valid and commonly used on Python lists during data transformation tasks?
(Choose two)
A) Index-based iteration
B) Key-value mapping
C) Append
D) Slicing
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: D | Question # 3 Answer: A,B | Question # 4 Answer: A,B | Question # 5 Answer: C,D |
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