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Product CaseML Case
4 years ago
How do you quantify the factors affecting the ride requests of the company?
Data Scientist

HelloFresh

Square

Quantcast

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4 years ago
Statistics
4 years ago
What is the total sample size needed to reduce the margin of error from 3 to 0.3, assuming your current sample size is n?
Data Scientist

HelloFresh

TikTok

Palo Alto Networks

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4 years ago
Behavioral
4 years ago
What would you do to improve HelloFresh if you were hired for Data Scientist?
Data Scientist

HelloFresh

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4 years ago
Coding
4 years ago
Could you design a function that searches for all anagrams derivable from a single string?
Data Scientist

HelloFresh

Lattice Logo

Lattice

Pandora Logo

Pandora

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4 years ago
ML Knowledge
4 years ago
Could you elaborate on the treatment of categorical data when faced with high cardinality?
Data Scientist

HelloFresh

Infineon Logo

Infineon

Pinterest Logo

Pinterest

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4 years ago
ML Knowledge
4 years ago
In the context of vanishing gradients, how do ReLU and sigmoid activation functions compare in effectiveness?
Data ScientistMachine Learning Engineer

HelloFresh

DigitalOcean Logo

DigitalOcean

Faire Logo

Faire

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4 years ago
Coding
4 years ago
What computational strategy would you utilize to segregate fake and real news content, and could you enact it?
Data Scientist

HelloFresh

DataRobot Logo

DataRobot

Deloitte Logo

Deloitte

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4 years ago
Coding
4 years ago
Can you construct a function to calculate the length of a sorted integer list that contains -1 as placeholders for out-of-range values, without using built-ins?
Data Scientist

HelloFresh

Springboard Logo

Springboard

Faire Logo

Faire

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4 years ago
Coding
4 years ago
Could you draft a Python code that sets up a hash table?
Data Scientist

HelloFresh

Cleo Logo

Cleo

Cruise Logo

Cruise

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4 years ago
Product Case
4 years ago
Let's go back to the time Meta had only Comment and Like. How would you design an an experiment to check if other emotions bottom can be added? (care, sad etc.). How you would build an A/B test?
Data Scientist

HelloFresh

Dropbox Logo

Dropbox

Gusto Logo

Gusto

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4 years ago

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

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