Every Individual performs some kind of economic activity. A salaried person gets salary and spends to buy Grocery and clothing, for children’s education, construction of house, etc.

A business run by an individual or a group of individuals also carries many economic activities like purchase of goods, sale of goods, payment of shop rent, payment of salaries to employees etc. Similarly, a government raises money through taxes and spends on various developmental activities.

In early 1900s, statistics and statisticians were not given much importance but over 

the years due to advancement of technology it had its wider scope and gained attention 

in all fields of science and management. We also tend to think statistician as a small 

profession but a steady growth in the last century is impressive. 

In view of the growing problem of unemployment and under-employment 

prevailing in the country it is very difficult to make an estimate of the total number of unemployment in a country like India. 

An input device can be defined as an electro mechanical device that allows the user to feed data into the computer for analysis and storage and to give commands to the  

computer. The data is entered into the

main memory through the input devices. They accept instructions from the user and convert the accepted instructions into the machine language.

U guys see it carefully is this pdf’s objectives is same according to your syllubus in FAA.