Data Analytics problems (Drop in User Engagement, etc.) solved using SQL
- Crunchbase: private and public companies, startups, and acquisitions
- Music Charts: Exploring the Music Billboard top 100 songs
- Stock Prices: Number crunching and designing metrics for Apple's stock price (throughout its history). Ticker symbol: AAPL
- DC Bikeshare: Routes and duration (time) of bike trips in DC
- SF Crime: crime rates and demographics in SF
- College Football: Sports statistics for college and high school football teams
- Drop in Engagement: Testing hypotheses for the source of the drop in engagement on a social media platform.
- A/B Testing: Determining if an A/B Test result is valid, and redesigning it to test alternative hypotheses.