Exploratory analysis of data makes use of graphical and numerical techniques to study patterns and departures from patterns. In examiningdistributions of data, students should be able to detect important characteristics, such as shape, location, variability and unusual values. From careful observations of patterns in data, students can generate conjectures about relationships among variables. The notion of how one variable may be associated with another permeates almost all of statistics, from simple comparisons of proportions through linear regression.
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