Data

The word data is the plural of datum, meaning a piece of information, or,
"the given". It is also commonly used as a mass noun, where it is treated as
singular, e.g., "This is all the data from the experiment". Many consider
this usage incorrect, or at least colloquial, and would prefer "These are
all the data from the experiment" (each individual measurement or result
from the experiment is a single datum). The word datum is taking on a life
of its own, however, and it is now most often used to mean a designated base
point against which measurements are taken.

Raw data are numbers, characters, images, or other method of recording, in a
form which can be assessed by a human or (especially) input into a computer,
stored and processed there, or transmitted on some digital channel.
Computers nearly always represent data in binary.

Data on its own has no meaning, only when interpreted by some kind of data
processing system does it take on meaning and become information.

People or computers can find patterns in data to perceive information, and
information can be used to enhance knowledge. Since knowledge is
prerequisite to wisdom, we always want more data and information. But, as
modern societies verge on information overload, we especially need better
ways to find patterns.

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