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BankBazaar Data Scientist Trainee Interview Questions and Answers
BankBazaar Data Scientist Trainee Interview Experiences
1 interview found
Anonymous
I applied via Naukri.com and was interviewed in Mar 2021. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. SQL queries.
Interview Preparation Tips
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AKASH KUMAR SINGH
I applied via Campus Placement and was interviewed in Dec 2016. There were 6 interview rounds.
Interview Questionnaire
4 Questions
- Q1. For this round he gave me lot of problems and asked to develop optimal algorithm to solve that. Problems were mainly on trees and number sequences
- Q2. In this round he mainly discussed my projects and asked me how these can be put to use in Paypal. He also asked some basic questions from ML
- Q3. HR round was just for formality
- Q4. Probability , question on calculating expected number of trials and puzzles
Interview Preparation Tips
Experience: The coding question was:
Given a binary string containing 0's and 1's. You can split the string such that each partition should be a exponential of 5 (1,5,25,625...). You were asked to return minimum number of partition for the given string such each partition is exponential of 5. If no such partition exists return -1.
Examples: '101101101' Ans: 3 (101, 101, 101)
'111' Ans: 3 (1,1,1)
10101 Ans: -1
Tips: For MCQ's prepare DSA, OS and Networking. For DSA you can refer to cormen
For Coding question practice on either geeksforgeeks or from any of the coding platforms like hackerrank
The shortlist was mainly dependent on coding question
Duration: 1 hour 30 minutes
Round: Puzzle Interview
Tips: Do lot of puzzles from heard on the street, -----/ , Try to search for more. It will be helpful in other interviews as well
Round: Technical Interview
Tips: Practice algorithm section from geeksforgeeks. There are lot of standard problems. The given questions were slightly modified version of standard problems
Round: Technical Interview
Tips: For this round you need to be well prepared with your projects and resume.
College Name: IIT Madras
Interview Questionnaire
5 Questions
- Q1. Tell me about yourself
- Ans.
I am a data analyst with experience in analyzing and interpreting complex data sets to drive business insights.
Experienced in using statistical analysis tools such as Python, R, and SQL
Proficient in data visualization tools like Tableau and Power BI
Skilled in data cleaning, data mining, and data modeling techniques
Strong problem-solving and critical thinking skills
Effective communicator and team player
Example: I have w...
- Q2. Biggest hurdle you faced during the work you did t organise the tech fest of your college
- Ans.
The biggest hurdle I faced during organizing the tech fest of my college was securing sponsorships.
Difficulty in convincing companies to sponsor the event
Limited budget for organizing a large-scale tech fest
Competition with other college events for sponsorships
Negotiating sponsorship deals and ensuring deliverables
Finding sponsors aligned with the theme and objectives of the tech fest
- Q3. Would you go for an MBA?
- Ans.
Yes, pursuing an MBA can enhance my skills and open up new career opportunities.
An MBA can provide a strong foundation in business and management principles.
It can help develop analytical and problem-solving skills.
An MBA can broaden my network and provide access to valuable connections.
It can open up leadership roles and higher-level positions in organizations.
Having an MBA can increase earning potential and job prosp...
- Q4. Reliance fresh wants to open a store in north-eastern part of India. Should it or should it not?
- Ans.
Yes, Reliance Fresh should open a store in the north-eastern part of India.
The north-eastern part of India has a growing population and increasing consumer demand.
Reliance Fresh can tap into the untapped market potential in the region.
Opening a store in the north-eastern part of India can help Reliance Fresh expand its presence and increase its market share.
Reliance Fresh can leverage its existing supply chain and dist...
- Q5. Guesstimate the number of people travelling by local metro in mumbai
- Ans.
The number of people travelling by local metro in Mumbai is estimated to be in millions.
Mumbai has a population of over 20 million people.
The local metro is a popular mode of transportation in Mumbai.
During peak hours, the metro trains are usually crowded.
The metro network in Mumbai is extensive, covering various parts of the city.
The number of daily commuters on the metro can be estimated based on population density a
Interview Preparation Tips
Experience: cpi above 7.0
Round: Test
Experience: Basic maths, shares related questions and english
Duration: 1 hour
Total Questions: 40
Round: Technical + HR Interview
Experience: Very easy round.
Skills: Aptitude, Communication, Quantitative Aptitude, Leadership Skills, Technical Skill
College Name: IIT Kanpur
I applied via Approached by Company and was interviewed before Apr 2023. There was 1 interview round.
(3 Questions)
- Q1. Implement lag() and lead() without using lag() or lead()
- Ans.
Implement lag() and lead() functions without using lag() or lead()
To implement lag(), shift the values in the array by one position to the right
To implement lead(), shift the values in the array by one position to the left
For example, to implement lag() on [1, 2, 3, 4], you can shift the values to get [null, 1, 2, 3]
For lead(), you can shift the values to get [2, 3, 4, null]
- Q2. How will you go about optimising a query?
- Ans.
Optimising a query involves identifying bottlenecks and improving efficiency.
Identify slow-performing queries using tools like query execution plans.
Optimize database indexes to speed up query performance.
Limit the number of columns and rows returned in the query.
Avoid using SELECT * and instead specify only the necessary columns.
Use appropriate data types and avoid unnecessary data conversions.
Consider denormalizing d...
- Q3. If the 3rd position in a string contains 'b' replace it with 'v'
- Ans.
Replace 'b' with 'v' in the 3rd position of each string in an array
Iterate through each string in the array
Check if the 3rd position contains 'b'
If yes, replace 'b' with 'v'
Skills evaluated in this interview
sameer kulkarni
(2 Questions)
- Q1. SQL case study for data
- Q2. Find nth salary
- Ans.
To find the nth salary in a dataset
Sort the dataset in descending order based on salary
Remove duplicates if necessary
Return the salary at index n-1
Selected
I applied via Naukri.com and was interviewed in Sep 2023. There were 3 interview rounds.
(1 Question)
- Q1. Tell me about yourself and the current projects you are working on.
(1 Question)
- Q1. Sql Questions on regex, json , window functions were there.
(1 Question)
- Q1. Questions on current project, Tableau related question were there.
(1 Question)
- Q1. Basic questions about resume
(2 Questions)
- Q1. Workplace adjustment questions
- Q2. Are you willing to work extra hours
I applied via Company Website
Interview Questionnaire
1 Question
- Q1. Tell me about a project you worked on in which you handled large set of data and multiple tables.
Interview Preparation Tips
I applied via Campus Placement and was interviewed in Dec 2021. There were 4 interview rounds.
Interview Questionnaire
1 Question
- Q1. Technical questions on sql
Interview Preparation Tips
Selected
I applied via Referral and was interviewed before Apr 2022. There were 3 interview rounds.
(1 Question)
- Q1. SQL Window functions projects
(1 Question)
- Q1. ML questions case study
Interview Preparation Tips
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