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Data Scientists Interview Questions
54,372 data scientists interview questions shared by candidates
None of the questions was technical. All “tell me about last time you…”
Experiment design, SQL, Python.
Questions that they don't even know the answer
About Yourself?
Asking about topics from my cv: supervised&unsupervised learning mostly. 1)What is linear regression ? error and reguarization methods (L1&L2) 2)How to determine k in k-means? 3)difference between GMM and k-means. 4)Explain PCA. 5)How to decide how many PC (in PCA) to use? 5)What is t-SNE? 6)Explain the difference between bootstrap and bagging and give example for one model for each one of them.
Is it possible to do the PCA operation with Neural network? How does an Autoencoder work? What kind of loss functions are used?
Given an array having numbers 1 to n, and also having two additional duplicates (ranging 1 to n). Find the two duplicates?
technical questions along with some behavioural quesitons
Joins & Unions, Filtering & Sorting, Aggregate Functions, Sub queries, String and Date functions,Window functions
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