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Impelsys Data Analyst Interview Questions and Answers
Impelsys Data Analyst Interview Experiences
1 interview found
Anonymous
I applied via LinkedIn and was interviewed in Jun 2021. There were 3 interview rounds.
Interview Questionnaire
3 Questions
- Q1. 1. Different between distinct and group by if it performed in single column
- Ans.
Distinct returns unique values while group by groups and aggregates data based on a column.
Distinct returns only unique values from a single column.
Group by groups and aggregates data based on a column.
Distinct can be used to count the number of unique values in a column.
Group by can be used to group data by a column and perform aggregate functions like sum, count, avg, etc.
Distinct is used to remove duplicates from a ...
- Q2. 2.right join Vs right outer join
- Ans.
Right join and right outer join are the same thing.
Right join and right outer join are interchangeable terms.
Both return all the rows from the right table and matching rows from the left table.
If there is no match, the result will contain NULL values for the left table columns.
Used to combine data from two tables based on a common column.
Syntax: SELECT * FROM table1 RIGHT JOIN table2 ON table1.column = table2.column;
- Q3. 3.how to handle column with special char.
- Ans.
Special characters in columns can be handled by replacing or removing them.
Identify the special characters in the column
Replace the special characters with a suitable alternative
Remove the special characters if they are not necessary
Use regular expressions to handle complex special characters
Ensure that the data type of the column is appropriate
Interview Preparation Tips
Skills evaluated in this interview
Interview questions from similar companies
Interview Preparation Tips
Experience: The questions were of medium to high difficulty. What set this test apart was the fact that each question had different weightage ranging from 0.5 to 3 marks per question. Time was a major factor. So my strategy was to attempt all the 1 and 1.5 marks questions which constitute the major chunk of the paper in around 40 minutes and spend the remaining 20 minutes for the 2 and 3 mark questions. I did not even bother reading the 0.5 mark questions. The 2 and 3 mark questions were difficult and those will differentiate you from others. 1600 students wrote the test and only 86 got shortlisted for the next round.
Duration: 60 minutes
Total Questions: 40
Round: Technical Interview
Experience: I was asked to write a C program to print the Fibonacci sequence and a basic SQL query. Apart from this I was asked a puzzle and other questions related to my resume. Out of the 86, only 26 students were called for the next round which again was a technical interview.
Round: Technical Interview
Experience: This was similar to the first technical interview. I had to write a C program to print the prime numbers between 1 and 100 and a puzzle was asked again. Apart from this a guesstimate to find the number of cars between 2 places was asked and a scenario based question too was asked. These were followed by resume related questions.
Round: HR Interview
Experience: All the 26 students who attended the second technical round were allowed to attend HR round as well. This was just for 4 - 5 minutes. I was asked about my family background and why I should be hired. My fondest memories from school days were asked too. Finally offer letter was given to 10 students out of the 1600 who wrote the test :P
General Tips: Just keep a calm head and attempt the questions. Ask for time to think if you are not able to answer the questions immediately. Be bold and confident. That is sufficient :)
Skills: Puzzle Solving Capability, Ability To Think, SQL, C Programming
College Name: VIT Vellore
Selected
I applied via Referral and was interviewed before Dec 2023. There was 1 interview round.
(2 Questions)
- Q1. Tell about yourself
- Ans.
I am a data analyst with a background in statistics and programming, passionate about turning data into actionable insights.
Background in statistics and programming
Experience in data analysis and visualization tools like Python, R, and Tableau
Strong problem-solving skills and attention to detail
Ability to communicate complex data findings to non-technical stakeholders
- Q2. Rate yourself in sql
- Ans.
I rate myself as proficient in SQL with experience in writing complex queries and optimizing database performance.
Proficient in writing complex SQL queries
Experience in optimizing database performance
Familiar with database management systems like MySQL, PostgreSQL, etc.
(1 Question)
- Q1. Tell me about yourself.
Interview Preparation Tips
(1 Question)
- Q1. Tell me about yourself.
Interview Preparation Tips
(1 Question)
- Q1. Can you tell me about yourself?
Interview Preparation Tips
I appeared for an interview in Jan 2025.
(3 Questions)
- Q1. Tell me about yourself
- Q2. Asked All SQL Syllabus
- Q3. Asked All Power Bi concepts
Interview Preparation Tips
Sumana Sumana
Online aptitude test have been coundected
(1 Question)
- Q1. About the data procesig and projects on data science
I applied via LinkedIn and was interviewed before Oct 2021. There were 3 interview rounds.
8 python coding
With 2 aptitude
Game based assessment.
More than 8 games need to play
(2 Questions)
- Q1. Questions from python and also from SQL. SQL is must to place LatentView. Some projects related questions
- Q2. How many joins are in SQL what is lamda function in python Difference between tuples and list
- Ans.
Answering questions related to SQL joins, lambda function in Python, and difference between tuples and lists.
There are four types of joins in SQL: inner join, left join, right join, and full outer join.
Lambda function is an anonymous function in Python that can take any number of arguments, but can only have one expression.
Tuples are immutable and ordered collections of elements, while lists are mutable and ordered col...
Interview Preparation Tips
Skills evaluated in this interview
I applied via Campus Placement and was interviewed in Nov 2022. There were 5 interview rounds.
Get questions from all topics and medium level questions
They give one topic and provide one minute for thinking its overall 30 min discussion
(2 Questions)
- Q1. Total technical rounds 1)basic resume questions, python and sql questions. 2)same round 1 but a little bit extra dose 3) managerial round
- Q2. List, tuple, oops concept. joins from sql
(1 Question)
- Q1. Why latent view why analytics best achivemnts
- Ans.
Latent view and analytics are essential for data-driven decision making. My best achievement is developing a predictive model for customer churn.
Latent view helps to uncover hidden patterns and insights in data that are not immediately apparent.
Analytics provides a systematic approach to analyzing data and extracting meaningful insights.
My best achievement is developing a predictive model for customer churn that helped
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