Senior data analyst Interview Questions | Glassdoor.co.uk

Senior data analyst Interview Questions

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Asked questions on data extraction, and knowledge of big data workflow

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I simply quoted the Big data star architecture and how the components work together from Hadoop to application layers

I had to put together a metric for a Supply Quality score (sounds more complicated than what it is) by using available data on performance (could use internet data, too). I also had to answer advanced level SQL questions. After this it was mainly behavior questions. At one point there was also a case study where I had to understand the logic of profit increase if hotels dropped their prices last minute and they received more bookings.

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How to join two sql tables and the difference between a union and join.

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the excel questions mostly required V-LookUps

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To explain statistical significance

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They tended to focus on skills and expertise for the role, I can't remember any specifically tricky questions

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What do you know about voodoo and why do you want this role? What is your experience of ETL, a/b testing, data modelling?

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