The word ‘Statistics’ has been derived from the Latin word ‘Status’ which means a political state. It has also it’s either to the Italian word ‘Statista’ or the German word ‘Statistik’ each one of which means a political state.
Statistics is defined as “the collection, presentation, analysis and interpretation of numerical data”.
In olden days, the data that was collected and maintained for the welfare of the people belonging to the state. We are thankful to Kautilya who had kept a record of births and deaths as well as some other precious records in his famous book ‘Arthashastra’ during Chandragupta’s region in the 4th century B.C. During the region of Akbar in the 6th century A.D. we find statistical records on agriculture in Ain-i-Akbari written by Abu Fazl. Referring to Egypt, the first census was conducted by the Pharaoh during 300 B.C. to 200 B.C.
Statistics has been defined variously by various authors in two different senses namely plural and singular. In the plural sense, it has been defined as a number of data and in the singular sense it has been defined as a method applied to the data.
The modern development in the field of not only Management, Commerce, Economics, Social Sciences, Mathematics and so on but also in our life like public services, defence, banking, insurance sectors, tourism and hospitality, police and military etc. are dependent on a particular subject known as statistics.
According to this definition, there are five stages.
1. Collection of data: There are various methods for collecting the data such as census, sampling, primary and secondary data etc.
2. Organization of data: After collection, the data are organized in a proper form which involves editing, classification and tabulation.
3. Presentation of data: After classification the data are presented in some suitable manner either in a diagrammatic or graphical manner.
4.