Samsung Business Analyst Interview Questions and Answers

Q1. Asked to create a power bi dashboard
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Q1. Had coding test on SQL and Python
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Q1. What is join in sql
Ans. 
Join in SQL is used to combine rows from two or more tables based on a related column between them.
• Join is used to retrieve data from multiple tables based on a related column

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column
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Q2. What is primary key
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Primary key is a unique identifier for each record in a database table.
• Primary key ensures each record in a table is uniquely identified

• It must contain unique values and cannot have NULL values

• Primary key can be a single column or a combination of columns

• Example: 'ID' column in a 'Users' table can be a primary key
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1 hour baisc on general aptitude

It was simple but lengthy

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
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Q2. About resume and technical
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Q1. What is an inactive relationship in PBI
Ans. 
An inactive relationship in Power BI is a relationship that is not being used in any visualizations or calculations.
• Inactive relationships can occur when a relationship is created but not utilized in any measures or visuals.

• These relationships do not impact the data model or query performance, but can clutter the model view.

• To remove an inactive relationship, you can delete it from the relationship view in Power BI.

• Ina...read more
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Q2. Import vs Direct Query vs Live connection
Ans. 
Import vs Direct Query vs Live connection
• Import: Data is imported into the tool for analysis, suitable for small datasets or when real-time data is not required

• Direct Query: Data is queried directly from the source in real-time, suitable for large datasets or when up-to-date data is needed

• Live connection: Data is connected live to the source, allowing for real-time updates and analysis without storing data locally
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Detailed case with four questions, required intensive number crunching and data analysis.
Suggestions: Stick to your basic understanding of the problem statement and state all your assumptions clearly.

A real business case was presented in a group of 5-7 people. Each one of us was given a specific role and we were told to discuss the case as a group and come up with a detailed solution.
A brief description of your answers/approach: We discussed the problem in hand from different angles - considering each function in detail. In the end of the discussion, we presented the business model of our idea to the Apple representatives in the form of a presentation.

Q1. Tell me about yourself
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Q2. Tell me about a time when you had to deal with a difficult colleague
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Q3. Biggest achievement
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Q4. Resume based questions
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Q5. Next part of the interview was case presentation - the at-home case we submitted before the GD round. We were given 10 minutes to give a detailed PPT on the case, which was followed by 30 minutes of Q&A se...read more
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