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 Measurement is needed to determine the exact starting point for each project contract primary (Y) and secondary metrics (y's). Objective: The primary metric of interest (to improve) is the output, Y. In order to determine the progress of the team the baseline performance needs to be determined.