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.
1 Normal body temperature can vary depending on the individual, the time of day, and even the weather. For most people, a temperature of 98.6 F (Fahrenheit) (37 C or Celsius) is baseline.  Temperature is usually controlled by the part of the brain called the hypothalamus.