Hgs Services Data Analyst Interview Questions and Answers for Freshers

Data is a collection of facts, figures, or statistics that can be analyzed to gain insights and make informed decisions.

• Data can be structured or unstructured

• Data can be qualitative or quantitative

• Examples of data include customer demographics, sales figures, and website traffic

• Data can be analyzed using various tools and techniques to extract meaningful insights

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

Aadhaar card is a unique identification card issued by the Indian government to residents of India.

• Aadhaar card is a 12-digit unique identification number issued by the Unique Identification Authority of India (UIDAI).

• It serves as proof of identity and address for Indian residents.

• Aadhaar card contains biometric and demographic information of the cardholder, including fingerprints and iris scans.

• It is used for various ...read more