Intern Data Scientist Interview Questions

940 intern data scientist interview questions shared by candidates

They asked how I would handle a highly imbalanced dataset for a classification problem, specifically asking which evaluation metrics I would prioritize over accuracy to ensure the model effectively detects the minority class.
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Data Scientist Intern

Interviewed at Boston Consulting Group

4.2
Dec 26, 2025

They asked how I would handle a highly imbalanced dataset for a classification problem, specifically asking which evaluation metrics I would prioritize over accuracy to ensure the model effectively detects the minority class.

1. Predictive maintenance case - if you have more time how will you explain to a client how you'll improve a model 2. Random forest - if you have a noisy dataset (lots of features that don't matter) whats the probability of the 2 features of interest being present in any single tree that randomly selects 50 features out of 100
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Data Scientist Intern

Interviewed at Boston Consulting Group

4.2
Feb 9, 2026

1. Predictive maintenance case - if you have more time how will you explain to a client how you'll improve a model 2. Random forest - if you have a noisy dataset (lots of features that don't matter) whats the probability of the 2 features of interest being present in any single tree that randomly selects 50 features out of 100

Devise an algorithm/model that accepts text as an input (social media posts) and needs to determine whether it is fake or not. The dataset at your disposal, which should be used for training, has additional information about each post (like the number of comments). In some cases, some of the data is missing, How would you handle something like this?
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Intern data scientist

Interviewed at Microsoft

4
May 25, 2022

Devise an algorithm/model that accepts text as an input (social media posts) and needs to determine whether it is fake or not. The dataset at your disposal, which should be used for training, has additional information about each post (like the number of comments). In some cases, some of the data is missing, How would you handle something like this?

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