Even though the importance of the sampling within scientific procedure for the knowledge generation has is recognized, professionals of the social and human sciences, customarily neglect the extraction phase to a sample. In the present work we concerns very especially to accomplish an attention call on the transcendency of this problems; at the same time, we will indicate possible causes and some of the consequences derived. Moreover, it presents help system software SOTAM, with the objetive to improve the samples quality.
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