What are Situation -> Action -> Results statements on resume?
Generally it is a technique that we use when we answer to the questions in interview. It is used to justify the skills that we have mentioned in Resume. Situation means a circumstance in past during which you have used a particular skill. You need to entirely elaborate the situation properly. Action means what was the task that you were supposed to do in a situation. Whereas result means, output that you were able to get because of your own efforts.
Similarly, if you are using this technique in your resume, then you need to elaborate in brief all these things to justify the skills you possess