Wikipedia 10K Redux by Reagle from Starling archive. Bugs abound!!!

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back to [[Statistical Theory]] -- [[Applied Statistics]]

We adopt the position that three basic notions are sufficient to describe all statistical models. 
#We choose a [[Statistical Unit]] which we will observe directly. Multiple observations of the same unit over time is called [[Longitudinal Research]]. Observations of a variety of [[Statistical Attributes]] is a common way of studying relationships among the attributes of a single unit.
#We may really be interested in a [[Statistical Ensemble]] (or [[set]]) of similar units rather than in any [[Statistical Unit]] per se. [[Survey Sampling]] offers an example of this type of application.
#Our interest may be focused on a [[Statistical Assembly]] where we examine functional subunits of the [[Statistical Unit]]. [[Physiology]] is an example in which we probe the organs which compose the unit.

[[Dick Beldin]]