What is data ? – Simple Definition
Definition Of Data
Data can be defined as a collection of raw facts or information from which conclusions may be drawn. In computer science, data are unprocessed facts that may be useful for creating meaningful outcomes in form of what so called as information. Information on the other hand are useful for day to day business processing and organizational decision making process.
Example of Data
The data of surrounding temperatures collected by an IoT(Internet of Things) device’s sensor embedded in a automated house project may look like:
6, 9, 12, 13, 14, 25
The data may help us compare daily fall and rise in temperatures of a room.
According to WikiPedia
Data is a set of values of qualitative or quantitative variables. Pieces of data are individual pieces of information. While the concept of data is commonly associated with scientific research, data is collected by a huge range of organizations and institutions, including businesses (e.g., sales data, revenue, profits, stock price), governments (e.g., crime rates, unemployment rates, literacy rates) and non-governmental organizations (e.g., censuses of the number of homeless people by non-profit organizations).
Data is measured, collected and reported, and analyzed, whereupon it can be visualized using graphs, images or other analysis tools. Data as a general concept refers to the fact that some existing information or knowledge is represented or coded in some form suitable for better usage or processing. Raw data (“unprocessed data”) is a collection of numbers or characters before it has been “cleaned” and corrected by researchers.
Raw data needs to be corrected to remove outliers or obvious instrument or data entry errors (e.g., a thermometer reading from an outdoor Arctic location recording a tropical temperature). Data processing commonly occurs by stages, and the “processed data” from one stage may be considered the “raw data” of the next stage. Field data is raw data that is collected in an uncontrolled “in situ” environment. Experimental data is data that is generated within the context of a scientific investigation by observation and recording. Data has been described as the new oil of the digital economy.