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GOOD DATA

2 AND BAD DATA

PRIMARY PREVIEW

Understanding Data Sources of Data
Types of Data Data Collection by Machines
Understanding Database Your Choice - Good Data and Bad Data

Think about the last time you searched for a cartoon on YouTube, asked a voice
assistant to play your favourite song or checked the score of a cricket match on

your phone. In all these examples, data is being collected.

UNDERSTANDING DATA

Data is the raw collection of

facts, figures, symbols or
observations that represent
details about events or objects.

Data can be numbers, words,
pictures, sounds or even

locations on a map. For
example, the temperature on
a thermometer is data. The

number of goals scored in a
football match is also data.
Similarly, the names of

students in your class register are data. fact bits

By itself, data may seem meaningless, but when it is Every day, more than
organised, processed and interpreted, it transforms into 2.5 quintillion bytes
valuable insights that support decision-making, problem- of data are created.

solving and innovation.

Good Data and Bad Data 21