Originally, i.e. until the first half of the 19th century, the term statistics-a word taken from the Latin language: status-meant a set of data or numbers describing the state of a political body. The first notations in this regard were used in ancient China and Egypt and later in the Roman Empire. Such data were very useful and this was confirmed once again in the Middle Ages. Later on, the scope of the term was enlarged to include all sets of data. In the 20th century, methods for the analysis of the collected information were incorporated.