Sr Data Scientist Interview Questions

3,395 sr data scientist interview questions shared by candidates

The case study was extensive, incorporating elements of visualization and forecasting. Its ambiguous nature, lacking clear questions, resulted in a time-consuming process. Ultimately, I received no feedback, which I consider unfair. Investing significant time and effort without receiving any response or evaluation from the other party seems unjust.
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Senior Data Scientist

Interviewed at PwC

3.6
Jan 22, 2024

The case study was extensive, incorporating elements of visualization and forecasting. Its ambiguous nature, lacking clear questions, resulted in a time-consuming process. Ultimately, I received no feedback, which I consider unfair. Investing significant time and effort without receiving any response or evaluation from the other party seems unjust.

Explain what the below pseudo-code is trying to do. array[N] # array of N integers, indexed 0 to N-1; # assume it’s populated with [1,4,2,-2,-9,10,2,12,2,-4,-4,-4,-4,2,6,7] peak = array[0] index = 0 output = [] # array of tuples For x in 1..N-1 if (array[x]*array[x-1] > 0) if peak < 0 and array[x] < peak peak = array[x] index = x if peak >= 0 and array[x] > peak peak = array[x] index = x else output.insert( (index, peak) ) peak = array[x] index = x end if end for return output
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Sr. Data Scientist

Interviewed at PriceLabs

4.5
Jul 9, 2023

Explain what the below pseudo-code is trying to do. array[N] # array of N integers, indexed 0 to N-1; # assume it’s populated with [1,4,2,-2,-9,10,2,12,2,-4,-4,-4,-4,2,6,7] peak = array[0] index = 0 output = [] # array of tuples For x in 1..N-1 if (array[x]*array[x-1] > 0) if peak < 0 and array[x] < peak peak = array[x] index = x if peak >= 0 and array[x] > peak peak = array[x] index = x else output.insert( (index, peak) ) peak = array[x] index = x end if end for return output

They asked what packages I've used, such as Pandas, and how I've used them. They also asked about my project experience. The last question I could not answer at all - it was about how I would approach a problem for which analytics were not yet developed, and how I would know to be satisfied with the result for the client.
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Senior Data Scientist

Interviewed at SG Analytics

3.1
Apr 17, 2018

They asked what packages I've used, such as Pandas, and how I've used them. They also asked about my project experience. The last question I could not answer at all - it was about how I would approach a problem for which analytics were not yet developed, and how I would know to be satisfied with the result for the client.

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