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TCS Data Scientist Interview Questions and Answers for Freshers

Updated 24 Feb 2025

TCS Data Scientist Interview Experiences for Freshers

2 interviews found

Interview experience
3
Average
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Not Selected

I appeared for an interview in Oct 2024.

Round 1 - Technical 

(1 Question)

  • Q1. Project related questions from your CV
Round 2 - Technical 

(2 Questions)

  • Q1. Question on transformers
  • Q2. Comparison of transfer learning and fintuning.
  • Ans. 

    Transfer learning involves using pre-trained models on a different task, while fine-tuning involves further training a pre-trained model on a specific task.

    • Transfer learning uses knowledge gained from one task to improve learning on a different task.

    • Fine-tuning involves adjusting the parameters of a pre-trained model to better fit a specific task.

    • Transfer learning is faster and requires less data compared to training a...

  • Answered by AI

Skills evaluated in this interview

I applied via AmbitionBox and was interviewed in Mar 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 - Aptitude Test 

Data science For 1 hr

Interview Preparation Tips

Topics to prepare for TCS Data Scientist interview:
  • Data Analysis
  • Machine Learning
  • Python
  • MySQL
Interview preparation tips for other job seekers - I am doing my Engineering in Computer science 3rd year. I have completed my data science course.

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Interview questions from similar companies

Interview Questionnaire 

1 Question

  • Q1. Basic ML

I applied via Campus Placement and was interviewed before Sep 2020. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Nothing much technical

Interview Preparation Tips

Interview preparation tips for other job seekers - 1. Go in formals
2. Fluency in English is important (depends on interview panel)
3. Clarity on what your talking about

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

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

I applied via Recruitment Consultant and was interviewed in Sep 2020. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Machine learning concepts[Regression and classification] ,Python and Sql Basics

Interview Preparation Tips

Interview preparation tips for other job seekers - Cool

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
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed before Oct 2022. There were 4 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 - One-on-one 

(3 Questions)

  • Q1. Question on based resume points
  • Q2. 2 to 3 codes
  • Q3. Project explanation
Round 3 - One-on-one 

(3 Questions)

  • Q1. Deep question and answering to know candidature behavior based on Resume
  • Q2. Coding in python
  • Q3. Project explanation
Round 4 - One-on-one 

(1 Question)

  • Q1. Scenario round, knowing how you think at particular situation

Interview Preparation Tips

Interview preparation tips for other job seekers - Do best practice of code, screen your resume by yourselves max to max, project explanation is like storytelling to small child.
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(2 Questions)

  • Q1. Discussion about my resume
  • Q2. General questions
Round 2 - Coding Test 

Coding round basic packages , and basic python coding

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

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

Round 1 - Technical 

(3 Questions)

  • Q1. What is hypothesis testing
  • Ans. 

    Hypothesis testing is a statistical method used to make inferences about a population based on sample data.

    • It involves formulating a hypothesis about a population parameter, collecting data, and using statistical tests to determine if the data supports or rejects the hypothesis.

    • There are two types of hypotheses: null hypothesis (H0) and alternative hypothesis (H1).

    • Common statistical tests for hypothesis testing include...

  • Answered by AI
  • Q2. What is null hypothesis
  • Ans. 

    Null hypothesis is a statement that there is no significant difference or relationship between variables being studied.

    • Null hypothesis is typically denoted as H0 in statistical hypothesis testing.

    • It is the default assumption that there is no effect or relationship.

    • The alternative hypothesis (Ha) is the opposite of the null hypothesis.

    • For example, in a study testing a new drug, the null hypothesis would be that the drug...

  • Answered by AI
  • Q3. What is supervised and unsupervised learning
  • Ans. 

    Supervised learning uses labeled data to train a model, while unsupervised learning uses unlabeled data.

    • Supervised learning requires labeled data for training

    • Unsupervised learning does not require labeled data

    • Examples of supervised learning include classification and regression

    • Examples of unsupervised learning include clustering and dimensionality reduction

  • Answered by AI

Skills evaluated in this interview

TCS Interview FAQs

How many rounds are there in TCS Data Scientist interview for freshers?
TCS interview process for freshers usually has 2 rounds. The most common rounds in the TCS interview process for freshers are Technical, Resume Shortlist and Aptitude Test.
How to prepare for TCS Data Scientist interview for freshers?
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 TCS. The most common topics and skills that interviewers at TCS expect are Data Science, Python, Machine Learning, SQL and R.
What are the top questions asked in TCS Data Scientist interview for freshers?

Some of the top questions asked at the TCS Data Scientist interview for freshers -

  1. Comparison of transfer learning and fintuni...read more
  2. How does decision tree algorithm work, what is cross entrop...read more
  3. If minimal data, which would you train for categorical prediction mod...read more
How long is the TCS Data Scientist interview process?

The duration of TCS Data Scientist interview process can vary, but typically it takes about less than 2 weeks to complete.

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TCS Data Scientist Interview Process for Freshers

based on 1 interview

Interview experience

3
  
Average
View more
TCS Data Scientist Salary
based on 2.2k salaries
₹5.2 L/yr - ₹21.9 L/yr
18% less than the average Data Scientist Salary in India
View more details

TCS Data Scientist Reviews and Ratings

based on 135 reviews

3.7/5

Rating in categories

3.6

Skill development

4.2

Work-life balance

2.7

Salary

4.6

Job security

3.8

Company culture

2.6

Promotions

3.4

Work satisfaction

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