Hello. I am a computer science student. I do a survey and quiz application for my final project. Teachers can create quizzes or surveys from their mobile phone and send to students. But my advisor want some scientific result at the end of system. I want to ask about it.

What kind of graphics and statistics can i show after a quiz or survey end? Which methods will be meaningful for data set of quiz results, right answers, wrong anwers and correlations between them or survey?

Thanks for help. I don't know if it is a stupid question but i need a roadmap