and Answers 100% Pass
What is Data - ✔✔Numbers, characters, images, etc
Must be interpreted by a human or a machine to derive meaning (data itself is
meaningless)
Alphanumeric - ✔✔type of data
numbers and letters
Text data - ✔✔Type of data
sentences and paragraphs used in written communication
Image Data - ✔✔Type of data
graphics, shapes, figures, etc
Audio data - ✔✔Human Voice and other recorded sounds
Types of Data - ✔✔alphanumeric, image, text, audio
Information - ✔✔data that has been interpreted
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, Analysis Gap - ✔✔the large gap between data businesses collect and the information
that decision makers require
Data Sizes - ✔✔small, medium, large
small data - ✔✔data that can reside in RAM or Memory
Medium Data - ✔✔Data that can reside on a hard disc
big data - ✔✔any data that cannot reside on a hard disc or in memory
The three V's - ✔✔apply to big data
Velocity: data speed
Variety: data types
Volume: data quantity
Digital Exhaust - ✔✔Unstructured information or data that is a by-product of the online
activities of Internet users: Collecting and analyzing data exhaust can provide valuable
insight into the purchasing habits of consumers.
Big data in business - ✔✔to secure data:
fingerprints
voice recognition
To improve customer experience:
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