Understanding Big Data and Geospatial Data

These flashcards cover the key concepts of big data, digital footprints, geospatial data, and the IMD+ Index, providing definitions and explanations for each.

What are the three key characteristics of big data?

Volume, velocity, and variety.

What does 'volume' in big data refer to?

It refers to the fact that the data is a record of whole datasets or populations, not just a sample.

What does 'velocity' in big data imply?

It implies that the data often includes real-time information, such as purchase transactions.

What is a digital footprint?

It refers to the traceable data created from online interactions such as tweets and Facebook posts.

How can geospatial data be defined?

It is any data related to or containing information about a specific location on the Earth's surface.

Give an example of a system that displays geospatial data.

Google Maps or GIS systems like ArcGIS.

What is the IMD+ Index?

It ranks small areas in England based on multiple factors like income, employment, education, health, and crime, from most to least deprived.

Why are predictions made using big data considered to be uncertain?

Because they depend on the quality of the data, and people's understanding and interpretation of it.