Understanding Data

Question	Answer
What is Data?	Data refer to unorganised facts that can be processed to generate meaningful result or information.
structured data	Data which is organised and can be recorded in a well defined format is called structured data.
Unstructured data	data which are not in the traditional row and column structure is called unstructured data.
Storage devices.	Hard Disk, SSD, CD/DVD, Pen Drive, Memory Card, etc.
What is Data Processing Cycle?	Data Processing cycle involves input and storage of data, its processing and generating output.
Which are statistical techniques?	Mean, Median, Mode, Range, and Standard Deviation
Mean	Mean is the average of given values
Median	Median is the mid value when data are sorted in ascending/descending order.
Mode	Mode is the data value that appears most number of times.
Range	Range is the difference between the maximum and minimum values.
Standard deviation	Standard deviation is the positive square root of the average of squared difference of each value from the mean.

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	Created by Aparna Dhirde over 4 years ago