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MasterCard Data Analyst Interview Questions, Process, and Tips
Top MasterCard Data Analyst Interview Questions and Answers
- Q1. Guesstimate the number of people travelling by local metro in mumbai
- Q2. Reliance fresh wants to open a store in north-eastern part of India. Should it or should it not?
- Q3. If the 3rd position in a string contains 'b' replace it with 'v'
MasterCard Data Analyst Interview Experiences
3 interviews found
sameer kulkarni
(2 Questions)
- Q1. SQL case study for data
- Q2. Find nth salary
Anonymous
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
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
Top trending discussions
Interview questions from similar companies
Vishwesh Dayama
(2 Questions)
- Q1. SQL Joins and remove duplicates
- Q2. Function to create a transaction bin column
- Ans.
Create a function to generate a transaction bin column based on transaction amounts.
Create bins based on transaction amounts (e.g. $0-$100, $101-$200, etc.)
Use pandas cut() function in Python to create bins
Assign bin labels to the transactions based on the bin ranges
I applied via Referral and was interviewed in Oct 2024. There were 3 interview rounds.
Sql, python, statistical questions
(2 Questions)
- Q1. How daily work looks like?
- Ans.
Daily work involves analyzing data, creating reports, and communicating findings to stakeholders.
Reviewing and cleaning data sets
Creating visualizations and dashboards
Conducting statistical analysis
Communicating insights to non-technical stakeholders
- Q2. Most ise tools?
- Ans.
Some of the most commonly used tools for data analysis include Excel, Python, R, Tableau, and SQL.
Excel is widely used for data manipulation and analysis.
Python and R are popular programming languages for data analysis and machine learning.
Tableau is a powerful data visualization tool.
SQL is essential for querying databases and extracting data.
4 sql tasks on 3 tables. Joins, subqueries
Interview Preparation Tips
Sql mandatory
Skills evaluated in this interview
Selected
I applied via Instahyre and was interviewed in Aug 2024. There was 1 interview round.
(2 Questions)
- Q1. Sql questions on windows functions, subquery
- Q2. Guesstimmate on how many cricket bat is solved in a year
- Ans.
It is difficult to accurately estimate the number of cricket bats sold in a year without specific data.
The number of cricket bats sold in a year can vary based on factors such as seasonality, popularity of cricket, and market trends.
One approach to estimate could be to consider the total population of cricket-playing countries and the average number of bats owned by players.
Another approach could be to look at the sale...
Snehith Korukonda
I applied via Naukri.com and was interviewed in Jul 2024. There were 4 interview rounds.
Topics were, DSA, SQL, PL/SQL, Data Augmentation
Customer churn classification using a classification ML model
(2 Questions)
- Q1. Write a pseudo code for Bubble sort
- Ans.
Bubble sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements, and swaps them if they are in the wrong order.
Start with the first element and compare it with the next element, swapping if necessary
Repeat this process for each pair of adjacent elements in the array until the entire array is sorted
Continue this process for each element in the array until no more swaps are ne
- Q2. What is an API
- Ans.
An API (Application Programming Interface) is a set of rules and protocols that allows different software applications to communicate with each other.
APIs define the methods for requesting and receiving data between software applications
APIs can be used to access data from external sources, such as social media platforms or weather services
Examples of APIs include the Twitter API, Google Maps API, and Spotify API
(2 Questions)
- Q1. Tell me about yourself
- Ans.
I am a data analyst with a strong background in statistics and data visualization.
Graduated with a degree in Statistics
Proficient in programming languages like Python and R
Experience in analyzing large datasets and creating data visualizations
Strong problem-solving skills and attention to detail
- Q2. Salaray compensation how much
Skills evaluated in this interview
(1 Question)
- Q1. Basic questions about resume
(2 Questions)
- Q1. Workplace adjustment questions
- Q2. Are you willing to work extra hours
Data Coding, 1hr, series of questions in excel
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
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MasterCard Data Analyst Interview Process
based on 3 interviews
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