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Dun & Bradstreet Data Scientist Interview Questions and Answers

Updated 4 Jul 2021

Dun & Bradstreet Data Scientist Interview Experiences

1 interview found

Interview Questionnaire 

1 Question

  • Q1. Was asked to explain one of my work projects in detail, Basic pandas syntax

Interview questions from similar companies

Interview experience
3
Average
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Approached by Company and was interviewed before Mar 2023. There was 1 interview round.

Round 1 - One-on-one 

(2 Questions)

  • Q1. Past projects of machine learning
  • Ans. 

    Developed a predictive model for customer churn using machine learning algorithms.

    • Used Python and scikit-learn library for data preprocessing and model building

    • Performed feature engineering to improve model performance

    • Evaluated model performance using metrics like accuracy, precision, and recall

  • Answered by AI
  • Q2. Distributed computing and spark questions

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Write a few python queries and some live sql coding and pyspark coding
  • Q2. Machine learning questions. Way too deep. which is not even required

Interview Preparation Tips

Interview preparation tips for other job seekers - The interview is way too technical then checking the logical thinking of candidate
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
6-8 weeks
Result
No response

I applied via Naukri.com and was interviewed in May 2024. There were 2 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. How to treat multicollinearity, imbalanced dataset
  • Ans. 

    Multicollinearity can be treated by using techniques like feature selection, PCA, or regularization. Imbalanced datasets can be addressed by resampling techniques like oversampling or undersampling.

    • For multicollinearity, consider using techniques like feature selection to remove redundant variables, PCA to reduce dimensionality, or regularization like Lasso or Ridge regression.

    • For imbalanced datasets, try resampling te...

  • Answered by AI
Round 2 - Technical 

(2 Questions)

  • Q1. Logistic regression in detail
  • Ans. 

    Logistic regression is a statistical model used to predict the probability of a binary outcome based on one or more predictor variables.

    • Logistic regression is used when the dependent variable is binary (0/1, True/False, Yes/No, etc.)

    • It estimates the probability that a given observation belongs to a particular category.

    • The output of logistic regression is a probability score between 0 and 1.

    • It uses the logistic function...

  • Answered by AI
  • Q2. Project related questions based on Machine learning

Interview Preparation Tips

Interview preparation tips for other job seekers - No response from the HR after this round even after multiple follow up calls

Skills evaluated in this interview

I was interviewed before Jun 2016.

Interview Questionnaire 

6 Questions

  • Q1. What is a bond? What are different types of bonds?
  • Ans. 

    A bond is a debt security that represents a loan made by an investor to a borrower.

    • Bonds are issued by governments, municipalities, and corporations.

    • They are used to raise capital and finance projects.

    • Different types of bonds include government bonds, corporate bonds, municipal bonds, and convertible bonds.

    • Government bonds are issued by national governments and are considered low-risk.

    • Corporate bonds are issued by comp...

  • Answered by AI
  • Q2. Tell us something about your specialisation subjects of BBA
  • Ans. 

    My specialisation subjects in BBA include marketing, finance, human resource management, and operations management.

    • Marketing involves understanding consumer behavior and creating strategies to promote products or services.

    • Finance focuses on managing funds, investments, and financial planning.

    • Human resource management deals with recruiting, training, and managing employees.

    • Operations management involves overseeing produ...

  • Answered by AI
  • Q3. Which is your favourite subject? Describe about it
  • Ans. 

    My favorite subject is history because I enjoy learning about past events and how they have shaped the world we live in today.

    • I find studying different time periods and cultures fascinating

    • I enjoy analyzing historical documents and artifacts

    • I like understanding how historical events have influenced current societies and politics

  • Answered by AI
  • Q4. Are you comfortable in night shifts
  • Ans. 

    Yes, I am comfortable with night shifts as I have prior experience working in night shifts.

    • I have previous experience working night shifts in my previous job.

    • I am able to adjust my sleep schedule to accommodate night shifts.

    • I understand the importance of being alert and focused during night shifts.

    • I am willing to work night shifts if required for the role.

  • Answered by AI
  • Q5. What are your hobbies
  • Ans. 

    My hobbies include hiking, painting, and playing the guitar.

    • Hiking: I enjoy exploring nature trails and challenging myself physically.

    • Painting: I find relaxation and creativity in expressing myself through art.

    • Playing the guitar: I love learning new songs and improving my musical skills.

  • Answered by AI
  • Q6. Where do your parents and siblings work
  • Ans. 

    My parents work in education and my siblings work in finance and healthcare.

    • Parents work in education

    • Siblings work in finance and healthcare

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: In this round there was an online test which had objective and subjective questions regarding the mentioned sections.
Duration: 1 hour
Total Questions: 30

Round: Technical Interview
Experience: The interviewer asked such questions about my graduation subjects and a little about how familiar I am of the work the company deals in.

Round: HR Interview
Experience: This round had the HR person ask general questions about my hobbies and about my family background and also told me about the company, its culture and the salary structure

College Name: Maharaja Surajmal Institute Of Technology
Round 1 - Technical 

(2 Questions)

  • Q1. SQL basics Python Basics Linux Basics
  • Q2. Questions on date and time and joins.

Interview Preparation Tips

Interview preparation tips for other job seekers - Sharpen Linux and SQL basics Python basics.

Hadoop or abintio could be added advantage.
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Campus Placement and was interviewed in Nov 2022. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - HR 

(2 Questions)

  • Q1. Tell me about yourself
  • Ans. 

    I am a data analyst with a strong background in statistics and programming.

    • Experienced in analyzing large datasets and extracting meaningful insights

    • Proficient in statistical analysis and data visualization tools such as Python, R, and Tableau

    • Skilled in SQL for data querying and manipulation

    • Strong problem-solving and critical thinking abilities

    • Effective communication skills for presenting findings to stakeholders

  • Answered by AI
  • Q2. Projects you have done
  • Ans. 

    Developed a predictive model to forecast customer churn for a telecommunications company.

    • Used machine learning algorithms to analyze customer data

    • Performed feature engineering to identify key predictors of churn

    • Built and trained a model using historical data

    • Evaluated model performance and provided actionable insights to reduce churn

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Crisil Data Analyst interview:
  • Python
  • sql
  • guest estimate
  • machine learning

I applied via Monster and was interviewed before Nov 2021. There was 1 interview round.

Round 1 - 2 round 

(2 Questions)

  • Q1. Baisc questions, communication skills with basic conputer knowledge and much about previous employment skills
  • Q2. Same basic questions were asked in 2nd round

Interview Preparation Tips

Interview preparation tips for other job seekers - Salary is on time , work enviorment is good but work pressure is too heavy and their is slow growth
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I was interviewed before Mar 2023.

Round 1 - HR 

(1 Question)

  • Q1. Do you know about INDas?
  • Ans. 

    INDas stands for Indian Accounting Standards, which are a set of accounting standards notified by the Ministry of Corporate Affairs in India.

    • INDas are based on International Financial Reporting Standards (IFRS) to ensure transparency and consistency in financial reporting.

    • They are mandatory for certain classes of companies in India, such as listed companies and certain other public companies.

    • INDas aim to improve the qu...

  • Answered by AI
Round 2 - Technical 

(2 Questions)

  • Q1. How do you start with a bottom up research?
  • Ans. 

    Start bottom up research by identifying specific data points, analyzing them individually, and then synthesizing them into a larger conclusion.

    • Identify specific data points or pieces of information relevant to the research topic

    • Analyze each data point individually to understand its significance and implications

    • Synthesize the individual data points into a larger conclusion or insight

    • Use a structured approach to organize...

  • Answered by AI
  • Q2. By analysing is,bs and cf. Reading investor presentation and annual report
Interview experience
4
Good
Difficulty level
Hard
Process Duration
2-4 weeks
Result
Not Selected

I applied via Referral and was interviewed before May 2022. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Aptitude Test 

There was around 6-7 query to write

Round 3 - Coding Test 

Requires good SQL query skills

Dun & Bradstreet Interview FAQs

How to prepare for Dun & Bradstreet Data Scientist interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Dun & Bradstreet. The most common topics and skills that interviewers at Dun & Bradstreet expect are Machine Learning, Python, Data Science, SQL and Predictive Modeling.

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Dun & Bradstreet Data Scientist Salary
based on 23 salaries
₹6 L/yr - ₹19.3 L/yr
10% less than the average Data Scientist Salary in India
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3.5

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3.5

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