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.
A baseline is a line that is a base for measurement or for construction. The word baseline may refer to: 1  baseline (configuration management), the process of managing change. 2  baseline (sea), the starting point for delimiting a coastal state's maritime zones.  Baselines of the Chinese territorial sea.