NTT DATA, Inc. Business Analyst Interview Questions and Answers

Autocorrelation is the correlation of a signal with a delayed copy of itself.

• Autocorrelation is used to identify patterns in time series data.

• It is a measure of how similar a signal is to a delayed version of itself.

• Autocorrelation can be positive, negative, or zero.

• It is commonly used in signal processing, finance, and econometrics.

• Autocorrelation can be visualized using a correlogram.

Heteroscedasticity is a statistical term that refers to the unequal variance of a variable across different levels of another variable.

• It is a violation of the assumption of homoscedasticity in regression analysis.

• It can lead to biased and inefficient estimates of regression coefficients.

• It can be detected through residual plots or statistical tests such as the Breusch-Pagan test.

• Examples include income and expenditure...read more

Data analysis is affected by various factors that can influence the accuracy and reliability of the results.

• Data quality: The accuracy, completeness, and consistency of the data can impact the analysis.

• Data sources: The reliability and relevance of the data sources used for analysis can affect the outcomes.

• Data preprocessing: The way data is cleaned, transformed, and prepared for analysis can impact the results.

• Data in...read more

I am a business analyst with experience in data analysis, process improvement, and project management.

• Experienced in data analysis and visualization using tools like Excel, Tableau, and Power BI

• Skilled in process improvement and optimization through Lean Six Sigma methodologies

• Proficient in project management and agile methodologies

• Strong communication and interpersonal skills, able to collaborate with cross-functional...read more

I grew up in a small town in the countryside, while Surat is a bustling city known for its textile industry.

• My hometown is peaceful and quiet, while Surat is always buzzing with activity.

• My hometown has a strong sense of community, while Surat is more diverse and cosmopolitan.

• My hometown is surrounded by natural beauty, while Surat has a rich cultural heritage and historical landmarks.

Advice for 15 year old and 40 year old Shubham

• For 15 year old Shubham: Focus on education and skill development

• For 40 year old Shubham: Embrace change and continue learning

• Both should prioritize their mental and physical health

• 15 year old Shubham should explore different interests and hobbies

• 40 year old Shubham should network and build professional relationships

I believe that working in a non-core company will provide me with a diverse range of experiences and challenges, allowing me to develop a broader skill set.

• Non-core companies often have a more dynamic work environment

• Opportunities to work on a variety of projects

• Chance to learn new skills and gain experience in different areas

• Potential for faster career growth

• Examples: IT companies, consulting firms, startups

In 3 years, I see myself as a senior business analyst leading a team and contributing to the growth of the company.

• Leading a team of business analysts

• Contributing to the growth of the company through data-driven insights

• Continuing to learn and develop new skills

• Building strong relationships with stakeholders

• Exploring opportunities for process improvement

Yes, I have some doubts about the company.

• I am not sure about the company's long-term growth strategy.

• I have concerns about the company's financial stability.

• I am unsure about the company's approach to employee development and retention.

I want to join Accenture because of its reputation as a leading consulting firm and its focus on innovation and technology.

• Accenture's reputation as a leading consulting firm is unmatched in the industry.

• I am impressed by Accenture's focus on innovation and technology, which aligns with my own interests and skills.

• I believe that Accenture's collaborative and diverse culture will provide me with opportunities to learn a...read more

I developed a software tool to automate the testing process of a complex system.

• Identified the need for automation due to the complexity of the system

• Researched and learned new programming languages and tools

• Designed and developed the software tool using Python and Selenium

• Collaborated with the testing team to ensure the tool met their needs

• Reduced testing time by 50% and improved accuracy of test results

Yes, I know programming languages.

• I am proficient in Java and Python.

• I have experience in using SQL for database management.

• I have also worked with HTML, CSS, and JavaScript for web development.

• I am familiar with Agile methodology and have used JIRA for project management.

BI tools are software applications used to analyze and visualize data to help businesses make informed decisions.

• BI tools can extract data from various sources and transform it into meaningful insights.

• They can create interactive dashboards and reports to present data in a user-friendly way.

• Examples of BI tools include Tableau, Power BI, and QlikView.

• BI tools can help businesses identify trends, patterns, and opportuni...read more