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Statistics

2 years ago

How would you determine the expected value of a random variable that has a basic distribution? Also, how might one go about constructing a confidence interval for this value?

Data Scientist

Zalando

Riot Games

N26

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2 years ago

ML Knowledge

2 years ago

What insights can you provide about employing a confusion matrix versus an ROC curve in evaluating model accuracy?

Data ScientistMachine Learning Engineer

Zalando

Udacity

Splunk

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2 years ago

Statistics

2 years ago

Assuming you have a container holding 4 red balls and 2 blue balls, what are the chances of selecting one red ball and one blue ball consecutively without returning the first pick?

Data Scientist

Zalando

Anaplan

HelloFresh

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2 years ago

BehavioralTechnical

2 years ago

Do you attend craft conferences? If so, what have been some of your key takeaways?

Data ScientistData Engineering ManagerUX DesignerEngineering Manager

Zalando

LendingClub

Bill.com

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2 years ago

Coding

2 years ago

What is the method to rebuild a binary tree from preorder and inorder traversal data?

Data Scientist

Zalando

eBay

Samsung

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2 years ago

SQL

2 years ago

Tell me how you would determine the top 5 highest-grossing products from a list of previous order data?

Data Scientist

Zalando

Rippling

GitLab

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2 years ago

Behavioral

2 years ago

How did you handle a situation where you couldn't meet a deadline?

Data ScientistTechnical Program ManagerSoftware EngineerML Engineering Manager

Zalando

Decathlon

NVIDIA

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2 years ago

StatisticsML Knowledge

2 years ago

In what way does PCA work and what are some of its cons?

Data ScientistMachine Learning Engineer

Zalando

Shutterstock

Improbable

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2 years ago

Statistics

2 years ago

What approach would you use to make inferences from the data collected in an A/B test, including estimating the difference in campaign effectiveness and assessing the significance of the results?

Data Scientist

Zalando

Blend

BuzzFeed

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2 years ago

ML Knowledge

2 years ago

How do you tune the parameters in DBSCAN to achieve optimal results?

Data Scientist

Zalando

Mozilla

Fitbit

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2 years ago

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