Describe how AB tests work. Elaborate on the main concerns when it comes do designing the AB test, implementing, analyzing and acting upon the findings.
Data Scientist Interview Questions
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Tell me about yourself? Why VISA? Why did you apply? ROUND 2 SQL and Python questions ROUND 3 ML and DL and data science questions
Softmax function
Leetcode pairs of elements in arrays with min abs difference.. SQL easy and medium LC
I was asked to solve a Kaggle competition - one which was relevant to the Coles' line of business.
They had a specific problem they were trying to solve, so the hiring manager asked how I would approach it. Before a later interview I had time to prepare more thoughts on possible solutions to this problem.
There are 2 datasets, one for training and one for scoring. Please use the first one to train models that predict what customers are more likely to churn than the other (feel free to leverage the tools that seem most adapted to you). And then score the second dataset with your best model.
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Where you worked earlier and how much the last package. Whats skills do you have and payslip verification
Write C++ code to copy a graph, once done whats the algorithmical complexity of this
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