One statistics and one coding interview. The Stats interview comprises of conditional problems, sometimes binomial. There's a simple regression analysis, and a basic question on interpreting ROC curve.
There were two interviews in the process. One was on python and the other one was on stats. There were some simple probability questions, interpreting an ROC curve and interpreting train and test error.
I applied online. I interviewed at Galvanize (San Francisco, CA) in Mar 2017
Interview
Interview process consisted of 2 stages. On coding interview I had one problem in Python. On stats interview I had 2 easy stats problems and several questions of stats, probability and modeling.