question of statistics ( power analysis)
Data Science Intern Interview Questions
10,344 data science intern interview questions shared by candidates
How to deal with an imbalanced dataset.
Si vous êtes seul sur une île déserte que faites vous ? Donnez moi vos qualités et défauts ? Pourquoi L'Oréal ? Citez moi les enjeux de l'Oréal ?
you fear about which animal?
Implement a Linked List class (for ints only) that supports an append function, which simply appends to the end of the list. After that, they asked me to implement an appendAt function that takes two ints as arguments, and appends the second argument to the node containing the first argument in the list. e.g for a list 1 -> 2 -> 3 -> 4 -> 5 , appendAt(3,6) would result in a list: 1 -> 2 -> 3 -> 6 -> 4 -> 5 e.g for a list 1 -> 2 -> 2 -> 3 -> 4 -> 5, appendAt(2,8) would result in: 1 - > 2 -> 8 -> 2 -> 3 -> 4 -> 5 (i.e if the first argument appears more than once in the list, then append the second argument to the first instance of the node containing the first argument) I gave an iterative solution to the problem. The interviewer then asked me to write it recursively. This one is really easy, I faltered on it for some reason.
They asked a Bayesian question.
Describe your previous work experience.
If you use random forest, how can you explain why it's working to your investors? Isn't linear regression the best?
Show me how you would code (a problem I can understand but have never solved for before).
Describe how you managed a setback in the classroom.
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