ABSTRACT
In the previous chapters, we have discussed how to locate and present data. In this chapter we discuss principles for knowing how to appropriately compare and use demographic data that have been located and interpret the results of data analyses. Too often analysts, as well as the press and other data users, make embarrassing and potentially costly mistakes in the use of demographic and related data. Here we present several basic principles that should help you to reduce the chances of making such errors. At the same time, it is important to note that no set of basic principles can substitute for detailed knowledge of techniques of data evaluation and analyses. The best means of obtaining the knowledge necessary to avoid mistakes is to invest the time it takes to know the strengths and weaknesses of different types of data and how the data can be appropriately and effectively used, compared, and analyzed. The principles noted below are thus meant to be extensive but not exhaustive of factors that you should consider in employing data for analytical or reporting purposes.
