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How did you come to find out you needed a new job?

What are the odds you can correctly guess a randomly chosen card from a deck? If allowed one question about its color or rank, which would you ask to better your chances?

If Meta only had the options to 'Comment' and 'Like', how would you go about experimenting with the addition of new emotional reactions like 'care' or 'sad'? What would your approach be for creating an A/B test in this scenario?

In what situations is regularization applied within machine learning, and why?

Could you delineate what a DMatrix is within XGBoost and contrast it with other gradient boosting data structures?

How do you locate the top 5 most frequently sold items from a list of order histories?

In your opinion, what are some of the key success indicators for someone in the Data Scientist role?

Can you program a Python function that reduces song stream figures by a specific markdown rate?

How would you determine the average transaction amount for customers with more than 10 purchases in the last 90 days?

Give an array of unsorted random numbers (decimals), find the interquartile distance.