Your questions begin from "hunches or predictions" or expectations about the outcome of your research. Ask questions centering on a theory or concept, discover the accuracy of the theory, ponder on variables to represent the extent of the application of the theory, and make up your mind on which variable to study through observation, interview, or experimentation. Explaining the meaning of a variable based on its involvement or role in the research process, particularly, in the measurement, manipulation, or control of the concept application is giving such term its operational definition.