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SQL

6 months ago

Given a list of (date, duration) tuples, what is your process for filtering by time period and then calculating summary statistics such as the average duration and rolling sum?

Data Scientist

Klarna

Samsara

GitLab

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6 months ago

Statistics

6 months ago

Describe what p-value is and its importance in statistical research.

Data Scientist

Palantir Technologies

Zenefits

ASML

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6 months ago

Analytics Case

6 months ago

Given that the amount of notifications being sent has decreased by 15%, what would you do?

Data Scientist

Spotify

Apple

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6 months ago

Behavioral

6 months ago

Could you tell me about a time when you had to convince someone of an idea and how you did it?

Data ScientistTechnical Program ManagerSoftware EngineerBackend Engineer

Dropbox

Square

Stripe

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6 months ago

SQL

6 months ago

Could you explain how you'd go about designing and implementing a database for the management of song information on a platform like iTunes?

Data Scientist

Cohesity

Discord

DigitalOcean

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6 months ago

Statistics

6 months ago

How would you define p-value?

Data Scientist

Palantir Technologies

Postmates

ASML

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6 months ago

ML Knowledge

6 months ago

How does one conceive and construct a minimum height tree in a graph?

Data Scientist

Apple

Meta

Fujitsu

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6 months ago

ML Knowledge

6 months ago

How are CNNs differently suited for tasks compared to RNNs?

Data Scientist

Bolt

Expedia

Ubisoft

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6 months ago

SQL

6 months ago

Describe your process for speeding up a slow SQL query.

Data Scientist

Palantir Technologies

Twitch

Grafana Labs

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6 months ago

Behavioral

6 months ago

How did you handle the situation when you had to assist a colleague in an area outside your responsibilities?

Data ScientistTechnical Program ManagerSoftware EngineerProduct Manager

Square

TikTok

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^*All interview questions are submitted by recent Data Scientist candidates, labelled and categorized by Prepfully, and then published after verification by current and ex-Data Scientist employees.