Introduction to Data Science

Data are raw observations from a domain of interest. They are a collection of facts such as numbers, words, measurements, or textual description of things. The word ‘data’ comes from ‘datum’ and means ‘thing given’ in Latin. Data are ubiquitous and are important trivial units for instrumentation of a business. All entities directly or indirectly related to the business, such as customers of the business, components of the business and outside entities that deal with the business, generate a large pool of data. Data are often considered as facts, statistics and observations collected together for reference or analysis. Data provide the basis of reasoning and calculations.