StackAdapt Data Scientist Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 15 interview experiences · FREE TO READ
Candidate interview experiences
First-hand accounts from people who interviewed at StackAdapt.
StackAdapt
Data Scientist
Entry Average Positive experience No offer 2 rounds
Interview process
Recruiter call Phone screen Technical screen
Interview formats
Behavioral Technical Coding
I had a recruiter zoom call where they asked me general questions about my past experience and projects and about what I actually did on those projects. Then, I had an interview with a team member where I had to talk about my previous projects more. The team member told me about the team and the role, and then asked me one question. I was told to get ready to present my work for about 30 minutes and to answer questions about probability, statistics, and data structures. I think I didn't do too well because they only asked me one question.
Confirmed questions4 questions
- Regarding a fair coin, what's the chance of getting a head given the first toss was a tail?
- What is the probability that both coin tosses are heads, given that at least one of them is a head?
- What's the complexity of looking for keys in hashmaps?
StackAdapt
Data Scientist
Mid Difficult Negative experience No offer 3 rounds
Interview process
Technical screen Onsite Offer
Interview formats
Coding Technical Case
It was three rounds total, with a final round. The final round was super intense and difficult, featuring a hard LeetCode problem, a tough statistics question, and some data analysis questions that were completely new to me. I'm not sure how to prepare for those specific data analysis parts. For LeetCode, I guess I could just grind hard problems, but I'm unsure why they'd include such challenging ones.
Confirmed questions1 question
- Given a stream of values, how would you calculate an unbiased average that remains unbiased at each step?
StackAdapt
Data Scientist
Senior Average Negative experience No offer 2 rounds
Interview process
Recruiter call Technical screen
Interview formats
Technical Coding
The interview coordination was fine, but the technical interview was not great. I gave an optimized dynamic programming answer and the interviewer doubted I could solve it myself and wanted me to solve it another way. This felt really dismissive. They should really focus on problem solving skills instead of making it difficult.
Confirmed questions1 question
- A submarine starts 30 meters below the surface. After rolling a fair six-sided die each round for 7 rounds, the submarine moves upward by the number rolled. What is the probability that the submarine is exactly at the surface (depth 0) after 7 rolls?
StackAdapt Data Scientist Interview Questions
Quoted word for word from StackAdapt interview reports.
“What is the probability of achieving k wins in n games given the win probability per game?”
Read reports →“A submarine starts 30 meters below the surface. After rolling a fair six-sided die each round for 7 rounds, the submarine moves upward by the number rolled. What is the probability that the submarine is exactly at the surface (depth 0) after 7 rolls?”
Read reports →“Given a fair coin, what's the chance of getting a head if the first toss was a tail?”
Read reports →“What is the probability that both coin tosses are heads, given that at least one of them is a head?”
Read reports →“What's the complexity of looking for keys in hashmaps?”
Read report →“For a fair coin, if we know at least one toss is a head, what's the probability that both tosses were heads?”
Read report →“If a fair coin is tossed twice and the first toss is a tail, what's the chance the second toss is also a tail?”
Read report →“What's the timing process for copying keys from a dictionary into a list?”
Read report →“What's the timing process for looking up a key in a dictionary or hash map?”
Read report →Formats, difficulty and experience
Across all 15 StackAdapt interview reports.