Upload Button Icon Add office photos

L&T Technology Services

Compare button icon Compare button icon Compare

Filter interviews by

L&T Technology Services Data Scientist Interview Questions and Answers

Updated 28 Feb 2024

L&T Technology Services Data Scientist Interview Experiences

1 interview found

Data Scientist Interview Questions & Answers

user image Sourabh BM

posted on 28 Feb 2024

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed before Feb 2023. There were 2 interview rounds.

Round 1 - Technical 

(2 Questions)

  • Q1. When do we use PCA?
  • Ans. 

    PCA is used to reduce the dimensionality of data by finding the most important features.

    • PCA is used when dealing with high-dimensional data to reduce the number of features and avoid multicollinearity.

    • It helps in visualizing data in lower dimensions while retaining as much variance as possible.

    • PCA is commonly used in image processing, genetics, finance, and other fields where dimensionality reduction is needed.

  • Answered by AI
  • Q2. PCA is a dimensionality reduction technique and is used to reduce the less useful features from the dataset
Round 2 - Technical 

(1 Question)

  • Q1. LTTS data science interview

Skills evaluated in this interview

Top trending discussions

View All
Interview Tips & Stories
1w (edited)
a team lead
Why are women still asked such personal questions in interview?
I recently went for an interview… and honestly, m still trying to process what just happened. Instead of being asked about my skills, experience, or how I could add value to the company… the questions took a totally unexpected turn. The interviewer started asking things like When are you getting married? Are you engaged? And m sure, if I had said I was married, the next question would’ve been How long have you been married? What does my personal life have to do with the job m applying for? This is where I felt the gender discrimination hit hard. These types of questions are so casually thrown at women during interviews but are they ever asked to men? No one asks male candidates if they’re planning a wedding or how old their kids are. So why is it okay to ask women? Can we please stop normalising this kind of behaviour in interviews? Our careers shouldn’t be judged by our relationship status. Period.
Got a question about L&T Technology Services?
Ask anonymously on communities.

Interview questions from similar companies

I appeared for an interview before Jul 2021.

Round 1 - One-on-one 

(2 Questions)

  • Q1. Model evaluation and performance metrices
  • Q2. Explaination of bagging and boosting techniques
  • Ans. 

    Bagging and boosting are ensemble techniques used to improve the accuracy of machine learning models.

    • Bagging involves training multiple models on different subsets of the training data and then combining their predictions through voting or averaging.

    • Boosting involves iteratively training models on the same data, with each subsequent model focusing on the samples that the previous models misclassified.

    • Bagging reduces va...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Work on basic concepts and previous projects

Skills evaluated in this interview

Data Scientist Interview Questions Asked at Other Companies

Q1. for a data with 1000 samples and 700 dimensions, how would you fi ... read more
Q2. Special Sum of Array Problem Statement Given an array 'arr' conta ... read more
asked in Affine
Q3. You have a pandas dataframe with three columns filled with state ... read more
asked in Walmart
Q4. Describe the data you would analyze to solve cost and revenue opt ... read more
Q5. Clone a Linked List with Random Pointers Given a linked list wher ... read more

I applied via Recruitment Consultant and was interviewed in Jul 2021. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Use case for insurance domain
  • Ans. 

    Predicting insurance claims using machine learning algorithms.

    • Fraud detection in insurance claims

    • Risk assessment for insurance policies

    • Pricing optimization for insurance products

    • Customer segmentation for targeted marketing

    • Predictive maintenance for insurance assets

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Be prepared with one use case in story telling way

Interview Questionnaire 

1 Question

  • Q1. Diffe heilman algorithm
  • Ans. 

    Diffie-Hellman algorithm is a key exchange protocol used to securely exchange cryptographic keys over a public channel.

    • It is based on the concept of discrete logarithm problem.

    • It involves two parties, Alice and Bob, who generate their own private and public keys.

    • The public keys are exchanged and used to generate a shared secret key.

    • The shared secret key is used for encryption and decryption of messages.

    • It is widely use...

  • Answered by AI

Skills evaluated in this interview

I applied via Recruitment Consultant and was interviewed in Mar 2021. There were 3 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Super Quick Case Study on Sales
  • Q2. Questions on Machine learning Projects in your Resume

Interview Preparation Tips

Interview preparation tips for other job seekers - Be thoroughly prepared with the projects that you have listed on your resume. For each project, you can prepare: What, How and why. Do be prepared with the results and impacts of any ML models that you built.

Other topics: SQL, Excel, Pivot tables

I applied via Naukri.com and was interviewed before Jul 2021. There were 3 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. NLP and Computer Vision based Question were asked.
Round 2 - Technical 

(1 Question)

  • Q1. General Questions on Machine Learning and deployments technique
Round 3 - HR 

(1 Question)

  • Q1. Salary Negotiations and joining discussion

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview questions are subject to current project requirements

Data Scientist Interview Questions & Answers

LTIMindtree user image Abhishek Srivastav

posted on 16 Mar 2015

Interview Questionnaire 

3 Questions

  • Q1. Code For parse Traingle
  • Ans. 

    Code for parsing a triangle

    • Use a loop to iterate through each line of the triangle

    • Split each line into an array of numbers

    • Store the parsed numbers in a 2D array or a list of lists

  • Answered by AI
  • Q2. Asci value along with alphabets(both capital and small)
  • Ans. 

    The ASCII value is a numerical representation of a character. It includes both capital and small alphabets.

    • ASCII values range from 65 to 90 for capital letters A to Z.

    • ASCII values range from 97 to 122 for small letters a to z.

    • For example, the ASCII value of 'A' is 65 and the ASCII value of 'a' is 97.

  • Answered by AI
  • Q3. Would you like to go for Hire studies
  • Ans. 

    I am open to further education to enhance my skills and stay updated with industry trends in data science.

    • Pursuing a master's degree in data science could deepen my knowledge in advanced analytics.

    • Online courses in machine learning and AI can help me stay current with emerging technologies.

    • Attending workshops and conferences can provide networking opportunities and insights from industry leaders.

    • Certifications in speci...

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: First round was through Elitmus.
If you want to be in IT industry must appear it atleast once, for core also u can try it.
It's usually a tough exam but if u are good in maths , apti you will crack it.
Tips: Focus more on Reasoning part. this is the most difficult part.
practise paragraphs reading and solving(Average level)(Infosys level or less)
If you need any kind of help you can contact me via email or can even ring me.
I would recomend everybody to appear this exam with minimum of one month dedicated preparation
Duration: 120 minutes
Total Questions: 60

Round: Coding Round on their own plateform
Experience: It was little difficult to write codes on some other plateform. But time was enough to cope up.
Tips: Try writing as many programs you can write in C, C++ and JAVA not on paper, on compiler . while giving this exam you can select any of these three languages. Based on that your technical Interview will be taken.

Round: Technical Interview
Experience: Its easy one if you have hands on on programing
Tips: Explore and explore .

Round: HR Interview
Experience: Most difficult round for me(I feel myself a little weak in English). But stay calm. And be cheerful.
I still don't know the exact answer of the question but conversation gone for about 20 minutes on this topic.
He din't seem satisfied with me. Btw most of the people says to say no. You can take your call according to the situation.
Tips: Stay calm. Have as much Knowledge about the organisation. Try to make your Intro as much interesting as possible with achivements, hobbies etc. Ya English plays most important role here.

General Tips: Always have faith in yourself. And remember Everything happens for some good reason
Skill Tips: Dont go deep in OS, DBMS but have rough idea about all the topics
Skills: C, C++, DATA STRUCTURE, DBMS, OS
College Name: GANDHI INSTITUTE OF ENGINEERING AND TECHNOLOGY
Motivation: I wanted a job. :)
Funny Moments: A number of stories are there related to this job.
One is I already had an offer so I booked my ticket to home from Bangalore But at very last moment my father told me that you should never miss any chance, go for it. I went and interview date was postponded due to some reasons. I got a mail at 10:30 pm saying I have to attend interview next day morning at 8:30 pm. I ran to get printout of that mail. The venue was 3 hour journey from my place so I din't sleep for the whole night because i knew that if I ll sleep, I would not be able to wake up But I din't studied also because it would have lead to sleep. And Without having sleep and last moment study I made it.

Skills evaluated in this interview

Are these interview questions helpful?

I applied via Recruitment Consultant and was interviewed in Mar 2021. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. Explain about your projects

Interview Preparation Tips

Interview preparation tips for other job seekers - Interviewer was looking for Data science experience in infrastructure that is building a solution for remedy ticket
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. How random forest works in feature selections process?
  • Ans. 

    Random forest uses feature importance to select the most relevant features for prediction.

    • Random forest calculates feature importance based on how much each feature decreases impurity in the model

    • Features with higher importance are considered more relevant for prediction

    • Random forest can automatically handle feature selection by using only the most important features

    • Example: In a random forest model predicting customer...

  • Answered by AI

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
Hard
Process Duration
-
Result
No response
Round 1 - Technical 

(1 Question)

  • Q1. Basics of Data Science was asked
Round 2 - Technical 

(1 Question)

  • Q1. About projects and technical side of project tech stack

L&T Technology Services Interview FAQs

How many rounds are there in L&T Technology Services Data Scientist interview?
L&T Technology Services interview process usually has 2 rounds. The most common rounds in the L&T Technology Services interview process are Technical.
How to prepare for L&T Technology Services 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 L&T Technology Services. The most common topics and skills that interviewers at L&T Technology Services expect are Business Solutions, CCTV Monitoring, Data Collection, Data Visualization and Predictive Modeling.
What are the top questions asked in L&T Technology Services Data Scientist interview?

Some of the top questions asked at the L&T Technology Services Data Scientist interview -

  1. When do we use P...read more
  2. PCA is a dimensionality reduction technique and is used to reduce the less usef...read more

Tell us how to improve this page.

Overall Interview Experience Rating

4/5

based on 1 interview experience

Difficulty level

Moderate 100%

Duration

2-4 weeks 100%
View more
L&T Technology Services Data Scientist Salary
based on 52 salaries
₹5 L/yr - ₹11.3 L/yr
48% less than the average Data Scientist Salary in India
View more details

L&T Technology Services Data Scientist Reviews and Ratings

based on 2 reviews

2.0/5

Rating in categories

2.0

Skill development

2.8

Work-life balance

1.2

Salary

2.8

Job security

1.2

Company culture

1.2

Promotions

2.8

Work satisfaction

Explore 2 Reviews and Ratings
Senior Engineer
6.2k salaries
unlock blur

₹6 L/yr - ₹13.3 L/yr

Engineer
4.8k salaries
unlock blur

₹4 L/yr - ₹7.5 L/yr

Technical Lead
2.3k salaries
unlock blur

₹13.5 L/yr - ₹23.5 L/yr

Project Lead
1.6k salaries
unlock blur

₹10.3 L/yr - ₹18 L/yr

Software Engineer
1.5k salaries
unlock blur

₹4 L/yr - ₹9 L/yr

Explore more salaries
Compare L&T Technology Services with

LTIMindtree

3.7
Compare

DXC Technology

3.6
Compare

Mphasis

3.3
Compare

EXL Service

3.7
Compare
write
Share an Interview