NCR Voyix Senior Data Analyst Interview Questions and Answers

It is nice to do work

It helps in understanding the 5

It helps a lot in company

Q1. How to do job in company?
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Q2. What I should do?
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Q3. How to do work?
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Q4. What should I do
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Q5. What is the goal?
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The goal of a Data Analyst is to analyze data to extract valuable insights and make data-driven decisions.
• Identify trends and patterns in data

• Create visualizations to communicate findings

• Provide actionable recommendations based on data analysis
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Q1. Basicn details to check for qualifications
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Q1. About my projects
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Q1. More details about ML models
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Q1. Tell me about your self?
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Q2. What technology & tools u know ? And basic questions regarding that topics ?
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Q1. Job culture and job responsibilities ?
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Q2. Some questions on an analytical tools like power BI ?
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Q1. Self-introduction
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Q2. What are your roles and responsibilities in current organization
Ans. 
I am responsible for analyzing data, creating reports, and providing insights to support decision-making.
• Analyze large datasets to identify trends and patterns

• Create reports and dashboards to visualize data for stakeholders

• Provide insights and recommendations based on data analysis

• Collaborate with cross-functional teams to drive data-driven decision-making
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Q1. Self-introduction
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Q2. Brief discussion about the roles and responsibilities for current opening
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Lead Data Analyst oversees data analysis team, develops strategies, interprets data, and presents insights to stakeholders.
• Manage and lead a team of data analysts

• Develop data analysis strategies and methodologies

• Interpret data and provide actionable insights to stakeholders

• Collaborate with cross-functional teams to drive data-driven decision making

• Ensure data quality and accuracy in analysis

• Stay updated on industry tre
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Q1. Self-introduction
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Q2. Technical round for Python, SQL, Tableau and Advanced Excel
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Q3. Scenario based questions
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Q1. Self-Introduction
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Q2. What do you understand about Sales Comp and its roles and responsibilities
Ans. 
Sales Comp is a system that determines how salespeople are compensated based on their performance.
• Sales Comp is short for Sales Compensation

• It involves designing and implementing a system to reward salespeople based on their sales performance

• Roles include setting sales targets, determining commission structures, and monitoring sales performance

• Responsibilities include analyzing sales data, calculating commissions, and ...read more
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Q3. Scenario based questions
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Q1. Self-introduction
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Q2. Scenario based questions
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Q1. Tell me about yourself
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Q2. Tell me in details about your project. (Mainly the python related project)
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Q3. Which ML algorithm did you use in your project?
Ans. 
I used the Random Forest algorithm in my project.
• Random Forest is an ensemble learning method that combines multiple decision trees to make predictions.

• It is used for both classification and regression tasks.

• Random Forest reduces overfitting and provides feature importance.

• Example: I used Random Forest to predict customer churn in a telecom company.
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Q4. What is Sql? And what is a database?
Ans. 
SQL is a programming language used for managing and manipulating relational databases. A database is a structured collection of data.
• SQL is used to retrieve, insert, update, and delete data from a database.

• A database is a software system that stores and organizes data in a structured manner.

• SQL allows users to define the structure of a database, create tables, and establish relationships between tables.

• Examples of data
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Q5. What do you understand by joins in sql?
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Joins in SQL are used to combine rows from two or more tables based on a related column between them.
• Joins are used to retrieve data from multiple tables in a single query.

• Common types of joins include inner join, left join, right join, and full outer join.

• Joins are performed using the JOIN keyword and specifying the columns to join on.

• Joins can be used to combine tables based on matching values or non-matching values.

• ...read more
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Q6. Apply join in the above tables (Table was provided by the interviewer)
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Q7. How many squares are their in a chess box? (Aptitude question)
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Q1. Basic of python , sql, pandas,niumpy
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Q1. Gave me a task to make web app for medical condition detection after clearing first round asked questions relted to it
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Find the Highest profit by geo

Q1. How can Logistic regression be applied for multiclasstext classification
Ans. 
Logistic regression can be applied for multiclasstext classification by using one-vs-rest or softmax approach.
• One-vs-rest approach: Train a binary logistic regression model for each class, treating it as the positive class and the rest as the negative class.

• Softmax approach: Use the softmax function to transform the output of the logistic regression into probabilities for each class.

• Evaluate the model using appropriate...read more
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