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Python Institute PCAD-31-02 Exam Syllabus Topics:

SectionWeightObjectives
Data Exploration and Statistical Analysis25%- Exploratory data analysis
  • 1. Feature selection and dimensionality reduction basics
  • 2. Identifying patterns, trends and outliers
- Inferential statistics
  • 1. Hypothesis testing and confidence intervals
  • 2. Statistical significance and interpretation
  • 3. Probability concepts and distributions
- Descriptive statistics
  • 1. Correlation and covariance analysis
  • 2. Frequency distributions and percentiles
  • 3. Measures of central tendency and dispersion
Data Modeling and Machine Learning Basics20%- Supervised learning fundamentals
  • 1. Classification: logistic regression, k-NN, decision trees
  • 2. Regression: linear, multiple, polynomial
  • 3. Model training, testing and evaluation
- Model performance and optimization
  • 1. Accuracy, precision, recall, F1-score
  • 2. Hyperparameter tuning basics
  • 3. Overfitting, underfitting and generalization
Data Acquisition and Preprocessing30%- Data collection, integration and storage
  • 1. Data collection methods and sources
  • 2. Data integration and merging
  • 3. Data formats and storage systems
- Data cleaning and validation
  • 1. Handling missing, duplicate and invalid values
  • 2. Quality assurance and validation techniques
  • 3. Data standardization and transformation
- Data preparation with Pandas and NumPy
  • 1. Data structures: Series, DataFrame, ndarray
  • 2. Indexing, filtering, sorting and grouping
  • 3. Data reshaping and aggregation
SQL and Database Integration10%- Python-database connectivity
  • 1. Executing queries and retrieving results
  • 2. Connecting to SQLite, MySQL or PostgreSQL
  • 3. Error handling and best practices
- SQL querying
  • 1. Subqueries and filtering
  • 2. SELECT, WHERE, JOIN, GROUP BY, aggregate functions
- Relational database concepts
  • 1. Tables, keys, relationships and normalization
Data Visualization and Communication15%- Visualization with Matplotlib and Seaborn
  • 1. Customization and styling
  • 2. Line, bar, scatter, histogram, box plots
  • 3. Heatmaps, pair plots and correlation matrices
- Visualization principles and best practices
  • 1. Color, layout and clarity
  • 2. Choosing appropriate chart types
  • 3. Audience-focused presentation
- Data storytelling and reporting
  • 1. Structuring insights and conclusions
  • 2. Written and verbal presentation techniques

Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) Sample Questions:

1. Which of the following improves the readability of a spreadsheet used for collaborative data analysis?

A) Removing gridlines from all sheets
B) Using colored fonts to highlight every cell
C) Adding freeze panes to lock header rows
D) Converting numeric values into images


2. Which of the following are limitations of manual data collection methods?
(Choose two)

A) Time-consuming process
B) Seamless integration with big data tools
C) Increased chance of human error
D) High scalability


3. What is one potential risk of dynamically constructing SQL queries using string concatenation in Python scripts?

A) Increased memory usage
B) Exposure to SQL injection attacks
C) Missing foreign key constraints
D) Slower database performance


4. What is the primary advantage of using web scraping as a data collection method in business analytics?

A) It eliminates the need for data cleaning
B) It allows automation of data collection from public sources
C) It ensures compliance with privacy laws
D) It guarantees real-time data accuracy


5. What is a key advantage of using the Parquet file format over CSV in large-scale data pipelines?

A) Parquet files can only be used with Excel
B) Parquet offers row-based compression
C) Parquet supports schema evolution and columnar storage
D) Parquet stores data in plain text, making it human-readable


Solutions:

Question # 1
Answer: C
Question # 2
Answer: A,C
Question # 3
Answer: B
Question # 4
Answer: B
Question # 5
Answer: C

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