Marketing/Interviews Surveys Guidelines

= Principals of Surveys and Questionnaires = When the elements of the targeted population for a study are high the entire process can be very long and usually translates into very high costs. In this cases, Marketing professionals try to set a sample of the population which shares the key characteristics that are to be studied. The process should contemplate the following:
 * Definition of the Survey Unit
 * Sample Dimension
 * Processing of Sample selection

Processing of Sample Selection
= Questionnaires =

Errors to Avoid
= Questionnaire Methods =

Inquiries by Observation
= Sources of Mistake =

Information Retrieval Errors
= Data Mining and Analysis =