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Statistics

3 years ago

When you roll a die, you earn the number on the die. What is the reward's expected value?

Data Scientist

Cognizant

trivago

Marqeta

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3 years ago

Behavioral

3 years ago

What was your most innovative idea? How did you come up with it, and how did you implement it?

Data ScientistData Engineering ManagerEngineering ManagerUX Designer

Cognizant

NetApp

Bill.com

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3 years ago

Behavioral

3 years ago

Tell me about a time when you failed at something you were aiming for.

Data ScientistProduct ManagerBackend EngineerSoftware Engineer

Cognizant

Okta

Stitch Fix

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3 years ago

ML Knowledge

3 years ago

What characterizes a DMatrix in the XGBoost framework, and how does this differ from other data formats in gradient boosting methods?

Data ScientistMachine Learning Engineer

Cognizant

Viber

Deloitte

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3 years ago

Behavioral

4 years ago

Tell me about an experience of when you lead a team.

Data ScientistProgram ManagerFrontend EngineerSite Reliability Engineer

Cognizant

Zoho

Ironclad

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4 years ago

Behavioral

4 years ago

Is there anything you do to make yourself stand out?

Data ScientistML Engineering ManagerData Science ManagerData Engineering Manager

Cognizant

OfferUp

eToro

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4 years ago

Analytics Case

4 years ago

Explain how you would evaluate and compare the effectiveness of two distinct search algorithms and their results.

Data Scientist

Cognizant

SeatGeek

Redfin

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4 years ago

ML Knowledge

4 years ago

In what ways do the K-means algorithm and the Expectation-Maximization (EM) algorithm differ?

Data Scientist

Cognizant

Chewy

Wayfair

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4 years ago

Behavioral

4 years ago

What would be your ideal team to join in Cognizant

Data Scientist

Cognizant

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4 years ago

Behavioral

4 years ago

Where do your near term objectives fit into your long term priorities?

Data ScientistFrontend EngineerProgram ManagerFull Stack Software Engineer

Cognizant

SurveyMonkey

Unity Technologies

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4 years ago

Try Free AI Interview

Cognizant

Data Scientist

Prepare for Statistics interview at Cognizant

Statistics

Cognizant

Data Scientist

Prepare for Metrics and Experimentation interview at Cognizant

Metrics and Experimentation

Cognizant

Data Scientist

Prepare for ML / Modeling interview at Cognizant

ML / Modeling

Cognizant

Data Scientist

Prepare for Problem Solving interview at Cognizant

Problem Solving

Cognizant

Data Scientist

Prepare for SQL interview at Cognizant

SQL

Cognizant

Data Scientist

Prepare for Resume Review interview at Cognizant

Resume Review

Cognizant

Data Scientist

Prepare for Behavioral interview at Cognizant

Behavioral

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