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DecisionTree Analytics Senior Data Analyst Interview Questions and Answers
DecisionTree Analytics Senior Data Analyst Interview Experiences
2 interviews found
Anonymous
(2 Questions)
- Q1. They will ask basic SQL queries and about your project and experience.
- Q2. Prepare for logical quiz questions.
I applied via Recruitment Consulltant and was interviewed before Sep 2021. There were 5 interview rounds.
(1 Question)
- Q1. Basic questions were asked regarding sql
Aptitude plus coding test was there on a sheet of paper
(1 Question)
- Q1. Puzzles and technical.questioms were asked
(1 Question)
- Q1. This was done with the CEO
(1 Question)
- Q1. Questions related to salary expectation
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I applied via Naukri.com and was interviewed in Sep 2024. There was 1 interview round.
(4 Questions)
- Q1. Tell me about yourself
- Ans.
I am a Senior Data Analyst with 5+ years of experience in analyzing complex data sets and providing actionable insights.
5+ years of experience in data analysis
Proficient in statistical analysis and data visualization tools such as Python, R, and Tableau
Strong problem-solving skills and ability to communicate findings to non-technical stakeholders
- Q2. Asked about recent project
- Q3. Types of join in sql
- Ans.
Types of join in SQL include inner join, outer join, left join, right join, and full join.
Inner join: Returns rows when there is a match in both tables
Outer join: Returns all rows when there is a match in one of the 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 join: Returns ro
- Q4. Case when statement questions
Skills evaluated in this interview
Selected
I applied via Company Website
SQL knowledge is must.
Any visualisation tool is preferred.
Python basic required.
(1 Question)
- Q1. Concepts of SQL Optimisation techniques CTE
Selected
I applied via Recruitment Consulltant and was interviewed in Apr 2024. There were 2 interview rounds.
Excel data analytics case
(1 Question)
- Q1. Data analytics, data visualisation tools
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(2 Questions)
- Q1. Mostly related to powerbi, python very little sql
- Q2. Tell me about yourself, situation based questions
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I applied via LinkedIn and was interviewed in Jul 2022. There was 1 interview round.
(2 Questions)
- Q1. What are sql aggregate functions?
- Ans.
SQL aggregate functions perform calculations on a set of values and return a single value.
Aggregate functions include COUNT, SUM, AVG, MAX, and MIN.
COUNT returns the number of rows in a table or the number of non-null values in a column.
SUM returns the sum of all values in a column.
AVG returns the average of all values in a column.
MAX returns the highest value in a column.
MIN returns the lowest value in a column.
- Q2. What is sub quires how its was working befif exolanation they asked for me
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Skills evaluated in this interview
Selected
I applied via campus placement at Coimbatore Institute of Technology, Coimbatore and was interviewed before Jul 2023. There were 2 interview rounds.
On Machine learning and aptitude
Case study to assess our analytical skills
Vamsi
(1 Question)
- Q1. Sql questions — very rarely asked questions.. was very tough
Interview Preparation Tips
I applied via Naukri.com and was interviewed before Dec 2019. There were 4 interview rounds.
Interview Questionnaire
1 Question
- Q1. Some questions related to project executed in past,advanced Excel functionality (vlookup limitation,offset,advanced filter),basic SQL(joins and window function), tableau related questions (data type,sunurs...
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