What is Data Science after all? I never liked this term, and I consider myself as a statistician, or better a data craftsman, because I mostly spend my time dealing with data after all. Stephanie C. Hicks & Roger D. Peng wrote a nice article, Elements and Principles of Data Analysis, which I believe provides quite an honest account of DS-related stuff:

Data science is the science and design of (1) actively creating a question to inves- tigate a hypothesis with data, (2) connecting that question with the collection of appro- priate data and the application of appropriate methods, algorithms, computational tools or languages in a data analysis, and (3) communicating and making decisions based on new or already established knowledge derived from the data and data analysis.