paragonx9

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?

My experiment tests lead in current beaches to see if there actually is if there are dangerous levels lead even though there are regulations for it. There are six holes, each 10 meters apart. Each hole is 6 inches deep. I have a lead testing kit to check if there is lead. Thanks!