Snowball sampling is a non-probability sampling technique that is used by researchers to identify potential subjects in studies where subjects are hard to locate.nowball sampling is a non-probability sampling technique that is used by researchers to identify potential subjects in studies where subjects are hard to locate.
In configuration management, a baseline is an agreed description of the attributes of a product, at a point in time, which serves as a basis for defining change. A change is a movement from this baseline state to a next state. The identification of significant changes from the baseline state is the central purpose of baseline identification.
setpoint. 1  the desired value in a closed-loop feedback system, as in regulation of temperature or pressure. 2  the point at which a thermostat has been set, as for optimum efficiency. Physiology. an internal regulatory system for maintaining a relatively stable physiological condition in the face of changing external circumstances, as body temperature in a varying climate. Compare homeostasis.