Tech screen was 4 moderately complex SQL queries (30 min) and a product feature case study (30 min)
Sr Data Scientist Interview Questions
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Business: How would you approach reducing order cancellations?
SQL: Write query to find order cancellation rate by day
increase delivery range how to determine the minimum detectable effect? urban vs rural? if the math tells us 2 days sample size is enough, will you only run experiment for 2 days?
4 SQL questions + Product Case Study
We discussed a number of things. e.g., some machine learning topics.
How would you explain regularization to a non-technical person?
Can you describe what a random forest is? What is the difference between ridge and lasso regression?
CNN , weight sharing between kernels
What is p-value ?
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