Hi, I'm Joey Gumbanjera

Data Analyst | Business Analyst | Business Intelligence Specialist

Who is Joey?

Joey Gumbanjera

Based in Warsaw, Poland, I am a final-year Computer Engineering student with a passion for data analysis and business intelligence. My journey hasn't been conventional – coming from a challenging background, I've learned the value of persistence and hard work in pursuing my dreams.

Despite facing numerous obstacles, I've maintained my focus on excellence in both academics and professional development. My experience has taught me that data isn't just about numbers – it's about telling stories and finding solutions that make a real difference.

Data Analysis Projects

MTCARS Analysis

MTCARS Exploratory Data Analysis

Comprehensive analysis of the classic MTCARS dataset using R programming, focusing on vehicle performance metrics.

Key Analysis Points:

  • Statistical analysis of vehicle characteristics
  • Correlation studies between performance metrics
  • Data visualization using ggplot2
  • Performance prediction modeling
View Project →
China Currency GDP Analysis

China Currency & GDP Analysis

In-depth analysis of the relationship between China's currency fluctuations and GDP growth patterns.

Key Analysis Points:

  • Time series analysis of currency trends
  • GDP growth pattern visualization
  • Economic indicator correlations
  • Impact assessment of policy changes
View Project →

Technical Skills

Data Analysis

Python (Pandas, NumPy) 90%
R Programming 85%
Statistical Analysis 85%

Business Intelligence

SQL & Database Management 88%
Power BI 85%
Advanced Excel 90%

Professional Certifications

Advanced Excel Dashboard Design

Maven Analytics

MySQL Data Analysis

Maven Analytics

Excel Pivot Tables

Maven Analytics

Advanced Data Analytics Path

Maven Analytics

Python, SQL, Power BI, and Statistical Analysis

The Data Science Course: Complete Data Science Bootcamp

Udemy

Machine Learning, Statistics, and Data Visualization

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