It is important to analyse the problem and define your purpose. It is useful at this stage to ask yourself questions such as the following:
What will the report investigate?
What is the scope of your investigation?
What are the limitations of your investigation?
What method will you use to conduct your investigation?
What is the significance of this investigation?
Defining the purpose of your report is most important. Once you have determined the purpose of the report, it will be easier to define your audience and the information you need to collect.