<p>I did my last summer internship with a data scientist and basically python (with this additional package called ‘pandas’ which makes python act like the statistical language R) was the primary programming langauge we used, but we also used some “Big Data” programming/scripting languages like the Hadoop framework (java) and Pig (it’s its own scripting language), and then we used some javascript data web apis like D3 to display/create visualizations of all of it when presenting it to others outside of the lab.</p>
<p>So I guess 61A since it teaches python, but 61B and 170 are best for interviews like the person above me said.</p>