In order to perform a study the research question is restated in the form of an hypothesis. The hypothesis contains all the variables that you wish to study and puts them in relationship with one another. The hypothesis expresses a point of view, a guess as to what the study will prove the relationship to be. The following are examples of hypotheses. Specifically it will test the hypothesis that hirsutism signals cardiovascular risk independent of obesity.
Research question contains appropriate variables.
Hypothesis is clearly stated. The variable are defined by the relationship to each other as independent, or dependent, or compounding. The variables in the study are defined operationally by the method that will be used to measure or quantify the variable. Brachytherapy and radical prostatectomy are the independent variables and quality of life is the dependent variable. Brachytherapy and radical prostatectomy will need to be defined.