Big Data

Question 1

What’s big data

Answer 1

Big data refers to large sets of data that can be recorded and analysed to reveal patterns and trends,
which collected through companies

There has been a mass increase in volumes of data ever since the
internet has emerged, which needs to be recorded and collected

Big data is ‘big’ due to the number of
people talking about it, and the wide range of opportunities it presents. Big data focuses on digital
footprints and impressions we make which are monitored daily

In the past, information used to be stored on paper and was only available to small groups of people. But
today, the development of search engines has allowed millions of people to access information.

Question 2

The five things

Answer 2

1. Volume- many factors contribute to the increase of data in volume, information is now stored
   online through communications and transactions which produce a large amount of data.
2. Velocity- data streaming is occurring at a vast speed and must be dealt with
3. Variety- data comes in all formats, qualitative or quantitative, emails, videos and documents
4. Variability- data flows inconsistently, social media always has trending information on a certain
   topic, which makes certain things popular. Data may be hard to manage if certain events on
   social media immediately peak out of nowhere
5. Complexity- data today comes with many sources and formats, which can be accessed through
   many systems to establish correlations