Infosys Data Analyst Interview Questions, Process, and Tips

Visualization tools help to represent data in a graphical format for better understanding.

• Tableau - used for creating interactive dashboards and reports

• Power BI - used for data visualization and business intelligence

• Matplotlib - used for creating static, animated, and interactive visualizations in Python

• D3.js - used for creating dynamic and interactive visualizations on the web

• QlikView - used for data discovery and vis...read more

Bi, Tableau, and Snowflake are different tools used for different purposes in data analysis.

• Bi (Business Intelligence) is a software that helps in analyzing data and creating reports.

• Tableau is a data visualization tool that helps in creating interactive dashboards and reports.

• Snowflake is a cloud-based data warehousing platform that allows for easy and efficient data storage and retrieval.

• Bi and Tableau can be used to...read more

Indian economy is a developing economy with a lot of potential for growth.

• India is the world's sixth-largest economy by nominal GDP and third-largest by purchasing power parity.

• The economy has been growing at an average rate of 7% per year for the past decade.

• India has a large and growing middle class, which is driving consumption and demand for goods and services.

• The government has implemented several reforms to impro...read more

To increase India's economy, focus on infrastructure development, education, and promoting entrepreneurship.

• Invest in infrastructure development to improve connectivity and transportation

• Promote education and skill development to create a more skilled workforce

• Encourage entrepreneurship and innovation to create more job opportunities

• Increase foreign investment and trade to boost the economy

• Reduce corruption and bureauc

Window functions like lag and lead are used to analyze data over a specific range or window.

• Lag function can be used to calculate the difference between current and previous values in a time series data.

• Lead function can be used to calculate the difference between current and future values in a time series data.

• Window functions can be used to calculate moving averages, cumulative sums, and other statistical measures.

• Fo...read more