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Hello, my name is David

  • 🌱 I’m currently learning - Data Analytics
  • 🔭 I’m currently working on projects related to SQL, Excel

List of my Projects

NASA ASTRONAUTS EDA - SQL

  • The astronaut dataset spans missions from 1959 to 2009, with an average mission year of 1985.
  • Currently, there are 50 active astronauts.
  • Spacewalk experience shows a skew toward lower ranges, with 249 astronauts categorized as below average and 108 as above average based on spacewalk hours.
  • Educational background analysis reveals a strong dominance of STEM fields, particularly Physics (35), Aerospace Engineering (33), Mechanical Engineering (30), Aeronautical Engineering (28), and Electrical Engineering (23).
  • Gender distribution is heavily skewed, with 307 male astronauts compared to 50 female astronauts, indicating a more interest from males.

WORLD LIFE EXPECTANCY EDA - SQL

  • Eliminated data inconsistencies by systematically removing duplicates and filling in missing entries, resulting in a dataset that was 100% ready for accurate analysis without any discrepancies or errors.
  • Analyzed the relationship between Life Expectancy and GDP, discovering a 10-year gap between countries with low GDP (64.6 years) and high GDP (74.2 years).

US HOUSEHOLD INCOME EDA - SQL

  • Executed thorough data audits resulting in the elimination of over 10 duplicate entries from essential datasets, establishing a solid foundation for accurate analysis of income trends and performance metrics.
  • Identified states with the lowest and highest average incomes, with Puerto Rico ($ 27k) at the lowest and the District of Columbia ($90k) at the highest.
  • Discovered that New Jersey had the highest median income ($126k), while Puerto Rico had the lowest ($22k).
  • Found that municipalities had the highest average income of $83k among different categories.

INTERACTIVE SALES DASHBOARD – TABLEAU

  • Crafted detailed graphs analyzing item sales across diverse categories and states, leading to the identification of top-performing products.
  • Created innovative data visuals utilizing heat map techniques which highlighted top-performing products by region; these discoveries can guide promotional tactics resulting in increased customer engagement rates.
  • Evaluated the cost-to-sales ratio for copier products and identified an impressive profit margin of $55,618.

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