The samples are usually drawn at regular time intervals. Collectively Exhaustive A set of alternatives is collectively exhaustive when they include all possibilities. Communality in factor analysis is the amount of variance a variable shares with all the other variables being considered. It is also the proportion of variance explained by the common factors. Comparability is the extent to which research results can be meaningfully compared.
Completion Rate is the proportion of qualified respondents who complete the interview.
Completion Technique is a form of projective technique where participants are asked to complete an incomplete situation. Complex Questions are questions containing words that are unfamiliar to respondents. Composite Variable Index is an index that combines a number of separate variables, eg education, income and occupation being used to form one overall measure of social class. Conative Component is one of the three components of attitude that is concerned with individuals' tendency to behave in a particular way towards an object or idea. It is usually measured in terms of likelihood to buy.