Every research study done collects demographic data and publishes it with the study. The purpose behind this is so the reader of the study will understand the population used in the study. Ideally, in every research study, a random sample that is representative of society as a whole would be used. This practice is not usually possible or practical to attempt in a research study. Instead, most studies used a different sampling method based on what is available and applicable to their research (Connelly, 2013). Instead of trying to represent society as a whole, researchers will attempt to represent the population that they are studying. To efficiently do that they must provide the demographic data to the reader to help give the research results validity. In a study regarding the quality of life of cancer survivors and their pain level, it is logical that the demographics include all cancer patients. To further give validity to the representativeness of their sample the researcher would attempt to have the demographics represent all cancer survivors (Bareh &amp