If you can't, you don't have a researchable problem. The statement should express a point of view on what is true or not true. Next, propose an experimental path to a solution. Describe the design of your experiment in writing. The second aspect of experiment design involves the strategy for the experiment.
Poor statistics is the number one reason for rejecting papers and research proposals.
It's too late to design the experiment correctly after all the data are collected. Describe the method of data collection in writing. Diagrams of the experimental apparatus are useful to supplement your text descriptions. Stick to the design scheme from the previous steps. Note any unusual occurrences or observations experienced in collecting your data.