My name is Matthias Ronnau, a Data Analyst from California. I currently work at Obagi Medical, a leading skincare company, where I query data to generate reports for various departments, analyze customer sales data, and build dashboards to track metrics and help improve company performance.

Prior to working at Obagi, I studied Statistics at the University of California, Berkeley, and Business Analytics at the University of California, Irvine. My studies primarily focused on linear regression, data visualization, machine learning, and time series analysis. Some past interesting projects I have completed involved me estimating and comparing crow densities in Rossmoor and Lucerne Valley, California and predicting the price of a used car from Craigslist.

Along the way, I have found it useful to create my own R package with some useful data manipulation functions.