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Statistics
4 years ago
How many times would you need to flip a coin to determine with confidence if it is a fair coin?
Data Scientist

Dell

Ola

Autodesk

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4 years ago
Statistics
4 years ago
Can you determine the probability that Dublin is experiencing rain based on the reports of three friends who each have a 1/3 chance to lie?
Data Scientist

Dell

Ubisoft

Coinbase

with p the general probability of rain in Dublin, P(rainy | 3 friends say it's raining) = 8/(7+1/p)

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4 years ago
Metrics and Experimentation
4 years ago
What system do you have in place to assess the efficacy of a marketing channel?
Data Scientist

Dell

Arm Logo

Arm

Gusto Logo

Gusto

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4 years ago
Data Visualization
4 years ago
Can you recommend tools or techniques for visualizing complex, multi-dimensional data?
Data Scientist

Dell

Sprout Social Logo

Sprout Social

SwiftKey Logo

SwiftKey

Muti-dimentional data means data with many features. We usually group by specific features and then calculate the summary statistics, using histogram. For example, in sales data, we can group by product category, and count the number of sales per week to understand top N product. 

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4 years ago
ML Knowledge
4 years ago
Can you discuss a specific project where you utilized dimensionality reduction techniques to effectively manage and analyze complex data?
Data Scientist

Dell

OpenDoor Logo

OpenDoor

Atlassian Logo

Atlassian

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4 years ago
Behavioral
4 years ago
If you could make Dell better - what would you change?
Data Scientist

Dell

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4 years ago
SQL
4 years ago
In what ways do you think measuring monthly retention is important for this company?
Data Scientist

Dell

Deliveroo Logo

Deliveroo

Mixpanel Logo

Mixpanel

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4 years ago
Behavioral
4 years ago
Describe an experience where you led a team.
Data ScientistProgram ManagerFrontend EngineerSite Reliability Engineer

Dell

Zoho Logo

Zoho

Ironclad Logo

Ironclad

In my previous role, I led a team to launch a new kit. The team included individuals from product support, segment marketing, sales, and customer support, and we were tasked with launch the product to market within a specific time frame to address a rising demand.

We faced the challenge of managing tight deadlines and aligning cross-functional teams with diverse priorities. To address this, I ensured that everyone understood the key objectives and customer needs, fostering collaboration and creating a detailed project roadmap. I set clear milestones and facilitated regular check-ins to ensure we were on track.

One of the biggest hurdles was getting buy-in from the sales team on the new product's value proposition. I worked directly with sales leaders to develop tailored sales tools and training materials, ensuring the team could effectively communicate the product’s benefits to customers.

By maintaining a clear focus on customer needs and empowering the team to collaborate effectively, we launched the product on time, surpassing adoption targets by 15% in the first quarter. This experience reinforced the importance of strategic planning, transparent communication, and making customer satisfaction a central part of the team’s mission.

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4 years ago
Behavioral
4 years ago
I'd like you to share an experience when you disagreed with a team member's approach.
Data ScientistTechnical Program ManagerSoftware EngineerProduct Manager

Dell

Lenskart Logo

Lenskart

Takeaway Logo

Takeaway

I try to understand their point of view and be open to new ideas. If I listen without being defensive I know  the other party will also listen. That way we can take the best idea from both and come up with great solution.

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4 years ago
Behavioral
4 years ago
Tell me about an experience when you led a team.
Data ScientistUX ResearcherEngineering ManagerUX Designer

Dell

PagerDuty Logo

PagerDuty

ChannelAdvisor Logo

ChannelAdvisor

i was head of events in a student activity called aces and it was a magnificent experience as i gathered a team wich i chose by myself and my partner as they all were hardworkers and creative thinkers of course we had some trouble with them as some of them were being lazy about doing there tasks or procranstinating but we were able to motivate them each time so they would give their best

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4 years ago

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Data Scientist

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Behavioral

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

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