VARIANCE ESTIMATION OF LINEAR REGRESSION COEFFICIENTS IN COMPLEX SAMPLING SITUATION

Surveys are now one of the main tools used by governmental agencies and private pollsters to collect information on a wide range of topics. For example, each month Statistics Canada turns to the population to evaluate the unemployment rate. In 1977-78, the Canada Health Survey (CHS) was done by Health and Welfare to study the health status of the Canadian population. (Health and Welfare Canada [1981]).