Today in class we had a guest lecturer, Professor John Wihbey, who taught us a bit about data visualization. We practiced creating charts with various data ranging from reported cases of whooping cough in the US to beverage prices. For our in-class assignment we created a visual for gender diversity in Silicon Valley. We looked at the overall percentage breakdown of men and women in the following companies: Facebook, Google, Yahoo, and Apple. We then compared it to the percentage breakdown of men and women working in tech in those same companies.