Statistical enquiry refers to an investigation on a topic by any agency or an individual which involves quantitative facts. In other words, statistical enquiry implies search of truth by using statistical tools. All statistical enquiries involve collection of data, their organization, presentation, analysis and interpretation. It is conducted for a predetermined purpose which may of different in different situations. For example, government may conduct a statistical enq. uiry for formulation of a policy while a businessman may conduct a statistical enquiry to know the response of its customers to a new product.