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Test Paper Generator Good data Data that is collected and organised helps to understand patterns. These patterns
help you to make information. For example, doctors use data to study diseases, app
developers use data to improve their apps and AI systems use data to make better
decisions.
2 and Bad data soUrces of data
Data doesn’t appear out of nowhere. It is collected from the world around us every
primary preview minute of the day. There are three main places where data comes from: sensors
Understanding Data Sources of Data and devices, people and the Internet. Let’s look at each one.
Types of Data Data Collection by Machines
Understanding Database Your Choice - Good Data and Bad Data Sensors and Devices
Answer Key Think about the last time you searched for a cartoon on YouTube, asked a voice A sensor is a tiny part inside an electronic device that picks up information from the
real world. It detects things such as heat, light, sound or movement and turns them
assistant to play your favourite song or checked the score of a cricket match on
into data. Sensors are found inside almost every gadget you can think of.
your phone. In all these examples, data is being collected.
temperature: The thermometer sensor inside
Here are some everyday examples of how sensors collect data:
Understanding data an air conditioner reads how warm the room
Data is the raw collection of is. This tells the machine exactly how much
facts, figures, symbols or cooling is needed to keep you comfortable.
observations that represent Movement: A step-counter inside a fitness
details about events or objects. band or smartwatch tracks your motion. It
uses this movement data to calculate how
Data can be numbers, words,
Lesson Plan pictures, sounds or even Vision: The camera in a mobile phone captures
many steps you have taken during the day.
locations on a map. For
example, the temperature on
a thermometer is data. The light to create photographs and videos. These
number of goals scored in a images and clips are known as visual data.
football match is also data. sound: A microphone picks up your voice and
Similarly, the names of converts the sound waves into audio data.
students in your class register are data. This allows you to talk to friends on a video call
fact bits
By itself, data may seem meaningless, but when it is Every day, more than or record a voice note.
organised, processed and interpreted, it transforms into 2.5 quintillion bytes Location: A Global Positioning System (GPS)
valuable insights that support decision-making, problem- of data are created. chip receives signals from satellites in space
solving and innovation. to work out your precise position. This location
data helps you find your way using digital maps.
22 Artificial Intelligence (CT & AI)-V Good Data and Bad Data 23
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