The student clearly states the independent and dependent variables in the research question, including the units of measurement. The method of analysis conducted is explicitly described in the research question, and the document includes a background theory section directly relevant to the research question. The choice of techniques used for measuring the variables is explained, and there is a clear explanation of the choice of the sampling technique applied. However, there is a need for a discussion regarding the student’s choice of certain aspects, such as the number of trials and the precision of the measurements. The student names controlled variables and explains how they were controlled, and also identifies and addresses safety, ethical, and environmental issues associated with the investigation. The methodology is described sufficiently, including detailed steps of the procedure, and there is no irrelevant or repetitive information included in the description of the methodology.
