I just happened across Analyzing the Analyzers and while it is several years old, I found it to be still relevant. Congratulations to Harlan D. Harris, Sean Patrick Murphy and Marck Vaisman for writing something that stood the test of time. Anyone doing a survey of data scientists should look at this book.
There are several charts based on a survey of self-identified data scientists, but I was fascinated with the one that shows how often people with different skill sets work with different scales of data. It is notable that most data scientists weren’t working with big data (see the chart below). I assume that in 2015 a much larger percentage of data scientists are working on a terabyte or petabyte scale.
