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Crisil Data Science Intern Interview Questions and Answers

Updated 20 Sep 2024

Crisil Data Science Intern Interview Experiences

2 interviews found

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

Logical reasoning, deduction reasoning

Round 2 - Technical 

(2 Questions)

  • Q1. Basic DSA leetcode easy and medium , arrays and hashmaps and LRU cache
  • Q2. SQL queries and DBMS questions

Interview Preparation Tips

Interview preparation tips for other job seekers - Revise DBMS and SQL and it is required

I applied via Campus Placement and was interviewed in Mar 2021. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Random forest, time series analysis.

Interview Preparation Tips

Interview preparation tips for other job seekers - Concepts must be thorough.

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Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I was interviewed in Dec 2024.

Round 1 - One-on-one 

(4 Questions)

  • Q1. What's the CI/CD workflow that's followed in your team?
  • Ans. 

    Our team follows a CI/CD workflow that includes automated testing, code reviews, and continuous integration.

    • Automated testing is run on every code change to catch bugs early.

    • Code reviews are conducted before merging changes to ensure code quality.

    • Continuous integration is used to automatically build and test code changes in a shared repository.

    • Deployment pipelines are set up to automate the release process.

    • Version cont...

  • Answered by AI
  • Q2. Has there been any security incident and how have you handled those ?
  • Ans. 

    Yes, there have been security incidents and I have handled them effectively.

    • Implemented security protocols to prevent future incidents

    • Conducted thorough investigation to identify the root cause

    • Collaborated with IT team to strengthen security measures

    • Communicated with stakeholders to ensure transparency and trust

    • Provided training to employees on cybersecurity best practices

  • Answered by AI
  • Q3. Difference between authorization and authentication ?
  • Ans. 

    Authentication verifies the identity of a user, while authorization determines what actions a user is allowed to perform.

    • Authentication confirms the identity of a user through credentials like passwords or biometrics.

    • Authorization determines the level of access or permissions a user has once their identity is confirmed.

    • Authentication is the process of logging in, while authorization is the process of granting or denyin...

  • Answered by AI
  • Q4. LLD for an authentication and authorization system
  • Ans. 

    LLD for an authentication and authorization system

    • Separate modules for authentication and authorization

    • Use of secure hashing algorithms for storing passwords

    • Role-based access control implementation

    • Audit logging for tracking user actions

    • Integration with external identity providers

  • Answered by AI
Round 2 - One-on-one 

(1 Question)

  • Q1. Design a document managed storage like google drive as an E2E solution.
  • Ans. 

    Design a document managed storage like Google Drive as an E2E solution.

    • Implement user authentication and authorization for secure access.

    • Create a user-friendly interface for uploading, organizing, and sharing documents.

    • Include features like version control, file syncing, and search functionality.

    • Utilize cloud storage for scalability and accessibility.

    • Implement encryption for data security.

    • Integrate with third-party app

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare well on the points mentioned in your resume.
Be ready to provide reasons for decisions taken for your resume.
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I was interviewed in Jan 2025.

Round 1 - One-on-one 

(2 Questions)

  • Q1. Can you elaborate on your work experience?
  • Ans. 

    I have 5 years of experience in analyzing large datasets to extract valuable insights and make data-driven decisions.

    • Analyzed customer behavior data to optimize marketing strategies

    • Built predictive models to forecast sales trends

    • Utilized machine learning algorithms to improve product recommendations

    • Presented findings to stakeholders in a clear and actionable manner

  • Answered by AI
  • Q2. What questions were asked regarding your work experience?
  • Ans. 

    Questions related to work experience in data science field.

    • Asked about previous projects worked on

    • Inquired about specific data analysis techniques used

    • Discussed challenges faced and how they were overcome

  • Answered by AI
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I applied via Naukri.com and was interviewed in Dec 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Explain any ML model.
  • Q2. Create Dataframe from two lists.

Interview Preparation Tips

Topics to prepare for Nielsen Data Scientist interview:
  • Python
  • pandas
  • ML
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
-

I applied via Company Website and was interviewed in Aug 2024. There was 1 interview round.

Round 1 - One-on-one 

(2 Questions)

  • Q1. Explain the RAG pipeline?
  • Ans. 

    RAG pipeline is a data processing pipeline used in data science to categorize data into Red, Amber, and Green based on certain criteria.

    • RAG stands for Red, Amber, Green which are used to categorize data based on certain criteria

    • Red category typically represents data that needs immediate attention or action

    • Amber category represents data that requires monitoring or further investigation

    • Green category represents data that...

  • Answered by AI
  • Q2. Explain Confusion metrics
  • Ans. 

    Confusion metrics are used to evaluate the performance of a classification model by comparing predicted values with actual values.

    • Confusion matrix is a table that describes the performance of a classification model.

    • It consists of four different metrics: True Positive, True Negative, False Positive, and False Negative.

    • These metrics are used to calculate other evaluation metrics like accuracy, precision, recall, and F1 s...

  • Answered by AI

Skills evaluated in this interview

Data Scientist Interview Questions & Answers

C5i user image Kushal Kulkarni

posted on 18 Jun 2024

Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Not Selected

I was interviewed in May 2024.

Round 1 - Assignment 

Questions based on ML,PYTHON, DATA VISUALIZATION

Round 2 - Technical 

(2 Questions)

  • Q1. What is TF-IDF IN NLP
  • Ans. 

    TF-IDF is a numerical statistic that reflects the importance of a word in a document relative to a collection of documents.

    • TF-IDF stands for Term Frequency-Inverse Document Frequency

    • It is used in Natural Language Processing (NLP) to determine the importance of a word in a document

    • TF-IDF is calculated by multiplying the term frequency (TF) by the inverse document frequency (IDF)

    • It helps in identifying the most important

  • Answered by AI
  • Q2. Python coding questions based on list

Interview Preparation Tips

Interview preparation tips for other job seekers - Practice python
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Recruitment Consulltant and was interviewed in Apr 2024. There was 1 interview round.

Round 1 - Coding Test 

SQL, Python coding …

Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Company Website and was interviewed in Sep 2024. There were 2 interview rounds.

Round 1 - Aptitude Test 

Basic mathematical and resoning questions.

Round 2 - Personal Interview 

(4 Questions)

  • Q1. Tell me about your self
  • Q2. Explain the recent project
  • Ans. 

    Developed a predictive model for customer churn in a telecom company

    • Collected and cleaned customer data including usage patterns and demographics

    • Used machine learning algorithms such as logistic regression and random forest

    • Evaluated model performance using metrics like accuracy and AUC-ROC curve

  • Answered by AI
  • Q3. What is the difference between random forest and decision tree
  • Ans. 

    Random forest is an ensemble learning method that uses multiple decision trees to make predictions, while a decision tree is a single tree-like structure that makes decisions based on features.

    • Random forest is a collection of decision trees that work together to make predictions.

    • Decision tree is a single tree-like structure that makes decisions based on features.

    • Random forest reduces overfitting by averaging the predic...

  • Answered by AI
  • Q4. What is cost function
  • Ans. 

    A cost function is a mathematical formula used to measure the cost of a particular decision or set of decisions.

    • Cost function helps in evaluating the performance of a model by measuring how well it is able to predict the outcomes.

    • It is used in optimization problems to find the best solution that minimizes the cost.

    • Examples include mean squared error in linear regression and cross-entropy loss in logistic regression.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - All the above questions is based upon the project what i have explained

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Referral and was interviewed in May 2024. There were 3 interview rounds.

Round 1 - Coding Test 

I was asked to write SQL queries for 3rd highest salary of the employee, some name filtering, group by tasks.
Python code to find the index of the maximum number without using numpy.

Round 2 - One-on-one 

(1 Question)

  • Q1. Explain the Project undertaken during the research and follow-up questions
Round 3 - Technical 

(1 Question)

  • Q1. Write pandas query to separate the names as first and last name from the full name. Drop the duplicate columns and also the missing values. Write output for the Python code. Write SQL query to retrieve t...
  • Ans. 

    Answering questions related to data science concepts and techniques.

    • Recall is the ratio of correctly predicted positive observations to the total actual positives. Precision is the ratio of correctly predicted positive observations to the total predicted positives.

    • To reduce variance in an ensemble model, techniques like bagging, boosting, and stacking can be used. Bagging involves training multiple models on different ...

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Nielsen Data Scientist interview:
  • Python
  • Pandas
  • SQL
  • Machine Learning
Interview preparation tips for other job seekers - Have your basics strong.

Skills evaluated in this interview

Crisil Interview FAQs

How many rounds are there in Crisil Data Science Intern interview?
Crisil interview process usually has 2 rounds. The most common rounds in the Crisil interview process are Aptitude Test and Technical.
What are the top questions asked in Crisil Data Science Intern interview?

Some of the top questions asked at the Crisil Data Science Intern interview -

  1. Basic DSA leetcode easy and medium , arrays and hashmaps and LRU ca...read more
  2. Random forest, time series analys...read more
  3. SQL queries and DBMS questi...read more

Tell us how to improve this page.

Crisil Data Science Intern Interview Process

based on 1 interview

Interview experience

4
  
Good
View more

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