Data Scientist Interview Questions

From statistical and basic knowledge on online shopping I could at least try possible solutions for the question posed. I think that was very close to what they expected.

The one is used to implement equality inside the object being compared while other takes 2 object arguments this can be very helpful to implement different comparison strategies.

yes

For an e-commerce website, you have to do a predictive modelling whether a customer will turn back or not. List the attributes you will consider for solving this problem.

I started by giving my background in ML, when I started pursuing it and my areas of interest. Then I moved on to my major B.Tech project and then discussed at length, He was basically not interested in how I implemented my project but rather how I moved from one phase of the project to the another. We had a good discussion about word2vec, autoencoders, LSTM's, etc

Basic questions based on pandas involving conditional selection.

Take a difference list. a = [15,15,60,15,15,..] Drop ones that are not 15. b = [15,15,15,15] Take the length and multiply by 15. 15*len(b)/3600 to get hours.