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a year ago

With a square grid where each cell holds a value, how can you determine the greatest possible sum from the top-left corner to the bottom-right by moving only down or to the right?

Data Scientist

Thumbtack

Babylon Health

Zoom

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a year ago

Coding

a year ago

Can you show me how to calculate the confidence intervals around a mean in Python?

Data Scientist

Thumbtack

Splunk

Google

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a year ago

Behavioral

a year ago

Describe the typical workflow of a Data Science project from start to finish.

Data Scientist

Thumbtack

Cisco

Arm

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a year ago

Behavioral

2 years ago

Which aspect of Data Scientist role at Thumbtack excites you the most?

Data Scientist

Thumbtack

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2 years ago

ML Knowledge

2 years ago

In binary classification, how do you handle imbalanced datasets where one class significantly outnumbers the other?

Data Scientist

Thumbtack

GoCardless

Mollie

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2 years ago

Coding

2 years ago

What algorithm would you use to generate a binary tree from given preorder and inorder traversals?

Data Scientist

Thumbtack

eBay

Samsung

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2 years ago

ML Knowledge

2 years ago

When it comes to decision trees, how do bias and variance come into play? And specifically, which is more concerning - high bias or high variance - and what's the reasoning behind that?

Data Scientist

Thumbtack

Elastic

Rivian

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2 years ago

Coding

2 years ago

How would you execute a dot product computation for sparse matrices?

Data ScientistMachine Learning Engineer

Thumbtack

Tesla

Postmates

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2 years ago

Coding

2 years ago

Explain to me how you would determine the shortest distance a knight can move from position A to B on an infinite chessboard.

Data Scientist

Thumbtack

Roblox

ByteDance

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2 years ago

Statistics

2 years ago

Can you write a Python function that yields a Bernoulli-distributed matrix and scales each element by the sum of its respective column?

Data Scientist

Thumbtack

Patreon

Google

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2 years ago

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^*All interview questions are submitted by recent Thumbtack Data Scientist candidates, labelled and categorized by Prepfully, and then published after being verified by Data Scientists at Thumbtack.

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