How do you know what statistical techniques to apply?
Senior Data Analyst Interview Questions
2,912 senior data analyst interview questions shared by candidates
Have you ever worked with Cognitiv or our products before? If so when have you used it and how did you hear about it.
The first step is an hour home test built with two sections. the first is a 40 minutes SQL test with 4 different questions. joins, aggregations, window functions, indexing. Later a 20 min business test with two assignments, in the first you need to record a video of yourself answering how can you predict a purchase of an iPhone based on the data you are given. And in the second you need to do a sanity check to a data table you are given, for example, the categories were not consistent during all months. The second stage is a Zoom interview where you are given a problem in python to solve, mine was transforming keys and values of a dictionary and avoid duplications during this transformation. later a question regarding how to solve it in SQL. The last stage is a 3 hour home test in SQL with research and business thinking.
CV based questions were asked
Si tengo una tabla X y otra Y, cómo harías un JOIN entre dichas tablas?
whats your experience with data
What was your college GPA?
Can't say due to NDA.
Can you deal with Chaos?
Descreva sua experiência acadêmica com pesquisa.
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