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BCG Data Analyst Interview Questions, Process, and Tips

Updated 20 Jan 2025

Top BCG Data Analyst Interview Questions and Answers

BCG Data Analyst Interview Experiences

5 interviews found

Data Analyst Interview Questions & Answers

user image Anonymous

posted on 14 Dec 2024

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

I applied via campus placement at SRM university (SRMU) and was interviewed in Jun 2024. There were 2 interview rounds.

Round 1 - HR 

(1 Question)

  • Q1. What makes you believe you are a good fit for this position?
  • Ans. 

    I have a strong background in data analysis, with experience in utilizing various analytical tools and techniques to derive insights from data.

    • I have a degree in Statistics and have completed multiple data analysis projects during my academic career.

    • I am proficient in using programming languages such as Python and R for data analysis.

    • I have experience working with SQL databases and extracting data for analysis.

    • I have s...

  • Answered by AI
Round 2 - Technical 

(1 Question)

  • Q1. What are SQL window functions and how are they used in database queries?
  • Ans. 

    SQL window functions are used to perform calculations across a set of table rows related to the current row.

    • Window functions operate on a set of rows related to the current row, known as a window.

    • They can be used to calculate running totals, ranks, averages, and more.

    • Common window functions include ROW_NUMBER(), RANK(), DENSE_RANK(), SUM(), AVG(), and LEAD().

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare the logical framework and break down the problem.

Data Analyst Interview Questions & Answers

user image Anonymous

posted on 25 Jul 2024

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Power BI Difference between ALL() and ALLSELECTED()
  • Ans. 

    ALL() ignores all filters in the query context, while ALLSELECTED() ignores only filters on columns in the visual.

    • ALL() removes all filters from the specified column or table.

    • ALLSELECTED() removes filters from the specified column or table, but keeps filters on other columns in the visual.

    • Example: ALL('Table') would remove all filters on the 'Table' in the query context.

    • Example: ALLSELECTED('Column') would remove filte...

  • Answered by AI
  • Q2. Excel Difference between COUNT() and COUNTA()
  • Ans. 

    COUNT() counts only numeric values, while COUNTA() counts all non-empty cells.

    • COUNT() counts only cells with numerical values.

    • COUNTA() counts all non-empty cells, including text and errors.

    • Example: COUNT(A1:A5) will count only cells with numbers, while COUNTA(A1:A5) will count all non-empty cells.

  • Answered by AI
Round 2 - Technical 

(2 Questions)

  • Q1. Resume based questions like explain the projects that you have done.
  • Q2. Sample dataset questions

Skills evaluated in this interview

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Data Analyst Interview Questions & Answers

user image Anonymous

posted on 25 Nov 2024

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

I applied via Approached by Company and was interviewed in May 2024. There were 2 interview rounds.

Round 1 - Aptitude Test 

Basic quant questions with some questions on ML. 2 python questions based on data processing.

Round 2 - Technical 

(2 Questions)

  • Q1. Difference between list and set
  • Ans. 

    List is an ordered collection of elements with duplicates allowed, while set is an unordered collection of unique elements.

    • List maintains the order of elements, while set does not guarantee any specific order.

    • List allows duplicate elements, while set does not allow duplicates.

    • List is accessed by index, while set is accessed by value.

    • Example: List - [1, 2, 3, 1], Set - {1, 2, 3}

  • Answered by AI
  • Q2. Difference between concat and merge
  • Ans. 

    Concat is used to combine data along a particular axis, while merge is used to combine data based on a common key.

    • Concatenation is done along an axis (rows or columns) in pandas, while merging is done based on common columns or indices.

    • Concatenation is a simple operation that just appends data, while merging involves combining data based on a key.

    • Concatenation can be done even if the data does not have common columns, ...

  • Answered by AI

Skills evaluated in this interview

Data Analyst Interview Questions & Answers

user image Anonymous

posted on 20 Jan 2025

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

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

Round 1 - Aptitude Test 

4 rounds of coding ml questions

BCG interview questions for designations

 Data Analyst Intern

 (1)

 Analyst

 (2)

 Business Analyst

 (1)

 Junior Analyst

 (1)

 Associate Analyst

 (1)

 Knowledge Analyst

 (1)

 Data Engineer

 (7)

 Data Scientist

 (2)

Data Analyst Interview Questions & Answers

user image Anonymous

posted on 26 Jun 2024

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

Nice Topics and easy questions

Round 2 - Group Discussion 

1 hour and nice experience

Round 3 - Case Study 

How is world evolving

Interview Preparation Tips

Interview preparation tips for other job seekers - Do well

Interview questions from similar companies

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

I was interviewed in Dec 2024.

Round 1 - Technical 

(6 Questions)

  • Q1. Tell me About Yourself
  • Ans. 

    I am a data analyst with a background in statistics and experience in analyzing large datasets.

    • Background in statistics

    • Experience in analyzing large datasets

    • Proficient in data visualization tools like Tableau

    • Strong problem-solving skills

    • Excellent communication skills

  • Answered by AI
  • Q2. Project working and day to day activities I do
  • Q3. Rate Yourself In SQL out of 5
  • Ans. 

    I would rate myself a 4 out of 5 in SQL proficiency.

    • Proficient in writing complex SQL queries

    • Experienced in optimizing database performance

    • Familiar with data manipulation and analysis functions

    • Comfortable working with large datasets

  • Answered by AI
  • Q4. Sql 3 question based on windows function
  • Q5. Very basic python 2 Question
  • Q6. What You do on power bi in your work Explain with full details workflow
  • Ans. 

    I use Power BI to analyze and visualize data for insights and decision-making in my work.

    • Connect to data sources to import data

    • Transform and clean data using Power Query Editor

    • Create relationships between different data tables

    • Design interactive reports and dashboards

    • Use DAX formulas for calculations and measures

    • Share reports with stakeholders and collaborate on insights

  • Answered by AI
Round 2 - Technical 

(1 Question)

  • Q1. All 3 sql Questions very simple Round but they didn't provide any Data tables just tell this and that so it may get confusing I slove 2 out of three but rejected on this Round questions Are intermidate

Interview Preparation Tips

Interview preparation tips for other job seekers - Overall interview Is Very simple just listen there Questions Clearly on sql You Will Crack Deloitte
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
6-8 weeks
Result
Not Selected

I applied via Naukri.com and was interviewed in Dec 2024. There were 4 interview rounds.

Round 1 - Aptitude Test 

Set of questions on english , aptitude , all are at easy level

Round 2 - Coding Test 

Sql basics and some query questions

Round 3 - HR 

(2 Questions)

  • Q1. Why do u want to join zs ; what do u know about zs; where do u see urself after 5 years ; question on real life scenarios ;
  • Q2. Question on real life scenarios
Round 4 - HR 

(2 Questions)

  • Q1. Salary expectation
  • Q2. When can u join

Interview Preparation Tips

Interview preparation tips for other job seekers - prepare all topics thorougly and general scenario questions and be confident and able to provide justice to ur approach
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Explain all types of joins
  • Ans. 

    Different types of joins in SQL are inner join, left join, right join, and full outer join.

    • Inner join: Returns rows when there is a match in both tables

    • Left join: Returns all rows from the left table and the matched rows from the right table

    • Right join: Returns all rows from the right table and the matched rows from the left table

    • Full outer join: Returns rows when there is a match in either table

  • Answered by AI
  • Q2. Difference between having and where
  • Ans. 

    The main difference between 'having' and 'where' in SQL is that 'having' is used with aggregate functions to filter groups, while 'where' is used to filter rows.

    • HAVING is used with GROUP BY to filter groups based on aggregate functions results

    • WHERE is used to filter rows based on conditions

    • HAVING is applied after GROUP BY, while WHERE is applied before GROUP BY

    • Example: SELECT department, AVG(salary) FROM employees GROU...

  • Answered by AI

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I applied via Newspaper Ad and was interviewed in Aug 2024. There were 3 interview rounds.

Round 1 - Aptitude Test 

Three sections are there 1) Aptitude Test 2) SQL 3) DSA

Round 2 - Technical 

(2 Questions)

  • Q1. What is DSA , sorting , difference between array and linked list
  • Ans. 

    DSA stands for Data Structures and Algorithms. Sorting is the process of arranging data in a particular order. Array is a data structure that stores elements of the same data type in contiguous memory locations, while linked list is a data structure that stores elements in nodes with pointers to the next node.

    • DSA stands for Data Structures and Algorithms

    • Sorting is the process of arranging data in a particular order

    • Arra...

  • Answered by AI
  • Q2. Written a SQL query
Round 3 - HR 

(2 Questions)

  • Q1. Coding question like add numbers
  • Q2. Experience on your project
  • Ans. 

    I have experience working on various data analysis projects, including market research, customer segmentation, and predictive modeling.

    • Developed predictive models to forecast customer behavior and optimize marketing strategies

    • Conducted market research to identify trends and opportunities for growth

    • Performed customer segmentation analysis to target specific demographics with personalized marketing campaigns

  • Answered by AI

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Sql questions checking ur knowledge
  • Q2. Self join questions about sql

BCG Interview FAQs

How many rounds are there in BCG Data Analyst interview?
BCG interview process usually has 2 rounds. The most common rounds in the BCG interview process are Technical, Aptitude Test and HR.
How to prepare for BCG Data Analyst 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 BCG. The most common topics and skills that interviewers at BCG expect are Consulting, Packaging, Analytical, Business Strategy and Data Analysis.
What are the top questions asked in BCG Data Analyst interview?

Some of the top questions asked at the BCG Data Analyst interview -

  1. What are SQL window functions and how are they used in database queri...read more
  2. Power BI Difference between ALL() and ALLSELECTE...read more
  3. Excel Difference between COUNT() and COUNT...read more

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BCG Data Analyst Interview Process

based on 5 interviews

2 Interview rounds

  • Aptitude Test Round
  • Technical Round
View more
Join BCG Beyond is where we begin.

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₹9.6 L/yr - ₹24 L/yr
151% more than the average Data Analyst Salary in India
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5.0/5

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5.0

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3.3

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5.0

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4.3

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5.0

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