B. Sc. III Semester V Subject-Statistics-XI DSE-E15: Sampling Theory Theory: 36 Hours. (Credit 02) Unit-1 Simple and Stratified Random Sampling: Introduction: Sampling is quite often used in our day to day practical life. For example - in a shop we assess the quality of sugar, wheat or any other commodity by taking a handful of it from the bag and then decide to purchase it or not. A housewife normally tests, the cooked products to find if they are properly cooked and contain the proper quantity of salt. In sampling theory we first define the following terms. i) Population (Universe) The group of individuals under study is called population or universe. (The totality of the objects of study) For example -if we are going to study the economic conditions of primary teachers in Maharashtra state, then the total of all the primary teachers in Maharashtra state is...