A written round was followed by two rounds of technical interviews. The written round had questions from quant (tsd, clocks, time and work, etc), verbal(para jumbles, sentence correction) and logical reasoning( patterns, blood relation, decoding). The interview had 1 puzzle and two guesstimates. Questions based on basic statistics (chi-square test, p-value) and econometrics (logistic regression, random forest, their assumptions)
My interview was mainly based on my cv. Know your cv inside out (all the projects, earlier internships, models used, theory)