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Walmart Data Scientist interview questions

based on 91 ratings - Updated May 30, 2026

Average interview difficulty

Mixed interview experience

How others got an interview

56%
Applied online
Applied online
17%
Employee Referral
Employee Referral
15%
Campus Recruiting
Campus Recruiting
7%
Recruiter
Recruiter
4%
Other
Other
1%
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Interview search

91 interviews

Data Scientist Interview

Apr 29, 2016

Anonymous Interview Candidate

No offer

Positive experience

Average interview

Application

I applied through other source. The process took 5 days. I interviewed at Walmart (El Paso, TX) in Jan 2016

Interview

I applied to a Data Science position through a Kaggle.com competition in which I placed well. The first interview consisted of a screening process conducted by a non-technical person. He asked how you would rate yourself (1-5) in Mathematics, Statistics, Machine Learning, Data Visualization and other very general non-technical questions. A second interview consisted of three persons with technical background and they asked questions related to Machine Learning, Regressions and mostly regression troubleshooting techniques

Interview questions [1]

Question 1

What are the assumptions of a Linear Regression? What is multi-collinearity, how do you fix it in a regression? Explain the difference between bagged and boosting models

Answer question

Data Scientist Interview

Jan 22, 2016

Anonymous Interview Candidate

No offer

Neutral experience

Difficult interview

Application

I applied online. The process took 3 months. I interviewed at Walmart (Little Rock, AR) in Nov 2015

Interview

I first had two phone screening and then I was called on an on-site interview in the Walmart HQ. The agenda of the interview day included a tour of Bentonville and rounds of technical interviews. The interviews were a positive experience (more or less). I have to say though, that the benefits of Walmart are not up-to the industry standards (10 days annual leave, 6 days federal leave and no specific sick days!).

Interview questions [1]

Question 1

What are the data structures in Python? What are the data structures in the Pandas package in Python? (hint - data-frame, index, etc.) What are generator, iterators, list comprehension in Python? Define parametric and non-parametric methods. Give some examples. What are the different types of Sampling methods that you have used? Give some problems or scenarios where map-reduce concept works well and where it doesn't work.

1 Answer

Data Scientist Interview

Dec 16, 2015

Anonymous employee

Accepted offer

Negative experience

Difficult interview

Application

I applied online. The process took 2 weeks. I interviewed at Walmart (San Bruno, CA) in Jul 2014

Interview

Was interviewed by multiple teams. The interview process is long but really fun. They don't ask trick questions, but really want to know what you have done in your previous jobs/school. Really important to practice eCommerce case studies and apply your knowledge to eCommerce problems. A fun experience in deed

Interview questions [1]

Question 1

How does your educational background relate to the work that is being done at Walmart eCommerce?

Answer question

Viewing 86 - 90 of 91 Interviews

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Walmart interviews Walmart Data Scientist interviews

Data Scientist Interview

Apr 29, 2016

Anonymous Interview Candidate

No offer

Positive experience

Average interview

Application

I applied through other source. The process took 5 days. I interviewed at Walmart (El Paso, TX) in Jan 2016

Interview

Interview questions [1]

Question 1

What are the assumptions of a Linear Regression? What is multi-collinearity, how do you fix it in a regression? Explain the difference between bagged and boosting models

Answer question

Data Scientist Interview

Jan 22, 2016

Anonymous Interview Candidate

No offer

Neutral experience

Difficult interview

Application

I applied online. The process took 3 months. I interviewed at Walmart (Little Rock, AR) in Nov 2015

Interview

Interview questions [1]

Question 1

1 Answer

Data Scientist Interview

Dec 16, 2015

Anonymous employee

Accepted offer

Negative experience

Difficult interview

Application

I applied online. The process took 2 weeks. I interviewed at Walmart (San Bruno, CA) in Jul 2014

Interview

Interview questions [1]

Question 1

How does your educational background relate to the work that is being done at Walmart eCommerce?

Answer question

Walmart

Walmart Data Scientist interview questions

Average interview difficulty

Mixed interview experience

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