Yuxiao Wang

A business problem that can be answered by decision tree is when an insurance campany wants to find out what kind of customers would buy their new insurance. The data needed is age, income, education, whether they bought insurance before, and married or not.

http://blog.revolutionanalytics.com/2012/06/applications-of-r-in-government.html
The article I read talked about how R is used for government. Government is using R and Google map to tracking pollution of a city. Before new drugs are allowed in the market, the FDA works with pharmaceutical companies to verify safety and efficacy through clinical…[Read more]

http://www.coolinfographics.com/blog/2017/5/17/how-5-tech-giants-make-their-billions.html
This inforgraphic does a great job on explaining how Apple, Alphabet, Microsoft, Amazon and Facebook making money from. It uses different color to represent each company,also it makes people easily to underdtand products each company have and what is the…[Read more]

The trickiest thing about creating an ERD is when one entity needs to be connected with multiple entities, and they have different relationships. It takes long time to figure out the right anwser. The best way to solve the problem is carefully read the question multiple times, and do more practice.

When I use music app to play music, it collects datas about songs I listened. For example, type of the music, artist of the music, and language of the music. The app finds the same song that I liked in other users’ playlist, and it assumes I might like songs from that user’s playlist. Based on the data it collected from me and datas it collected…[Read more]