Hi, I was wondering what the data and error analysis was. This is my f!rst science fair project, so I'm pretty clueless.. Could anyone explain this to me?

In the broadest of terms, you need to analyze the data and see how well or how poor it fits the model. Sometimes, you need the data to actually give you some information about the model. Then, the error analysis tells you how well the data actually fits that model. But, the details of how to do all that really depends on the nature of the data and project itself. Surely, you've been introduced to some of this in school, or at the very least your instructor should be able to give you some guidelines and examples of what is expected of you?