GS202 Lecture Notes - Lecture 5: Telephone Directory, Complex Question, Fetus
Document Summary
A survey is a system for collecting information from or about people to describe, compare, or explain their knowledge, attitudes, and behaviour. Allows for standardization in asking of questions and the categorizations of the answers given. Describe what you want to find out; decide upon type of survey (mail, interview, telephone); write survey questions; decide on response categories; design layout. Decide on target population; get sampling frame; decide on sample size; select sample. The entire group you want to study. A subsection of the population, chosen in such a way that their characteristics reflect those of the group from which they are chosen. A sample not selected using a random sampling method. essentially , this implies that some units in the population are more likely than others to be selected. Can"t guarantee that the sample we observed is representative of the population.
