... examine the source, the goal of the publication, and the context of the data. One of the types of primary data that is of interest to marketers is demographic and socioeconomic information about the target market, such as age, education, profession, family status, income and social class. Researchers often compare these parameters with the data at hand to get additional insights into the subject of the research. Demographic and socioeconomic characteristics are often used for purposes of market segmentation. These characteristics are often called the composites of living in the sense that they define the most important people's traits. Some of them, such as age, sex, and level of education can easily be checked. Others, such as social class can be verified only approximately, because these are relative, not absolute characteristics. Income also can be difficult to measure. Although the amount of personal income in a year is an absolute ...

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