Re: Coursera Data Science Specialization
While the Johns Hopkins courses are heavier in big data itself, the Duke courses are more general and provide the analytics background needed to jump into big data. I'm actually shocked at the number of people (present company excepted, of course) who think big data analytics do not use the same skills as plain data analytics. The concerns for data quality, statistical significance, hypothesis testing, etc. apply to analysis of all data sets, regardless of size. Training in the basics, and use of them in a more typical analytics process, can provide the experience needed to move into the big data world.