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.
In project management there are three baselines â schedule baseline, cost baseline and scope baseline. The combination of all three baselines is referred to as the performance measurement baseline. A baseline is a fixed schedule, which represents the standard that is used to measure the performance of the project.