make it clear what info is needed
Using the purpose, concept, or theory of research to consider all variable. To make a list of each variables that what indicators, and how many topic of question should have. This help to understand each variables and can see the overview of questionnaires.
The first step should be relatively easy, assuming that the researchers have done a good job at earlier stages in the research process.
Hypotheses, dummy tables, etc., make it clear what information is needed.
STEP 1: Specify What Information Will Be Sought
Descriptive and causal research require that researchers have enough knowledge about the problem to frame specific hypotheses to guide research
Hypotheses specify what relationship will be investigated
A researcher can determine what information will be sought and from whom
The preparation of the questionnaire may itself suggest further hypotheses and other relationships that might be investigated
Do not test hypotheses for the sake of variety or getting interesting information