Is there relationship between having a high school education

Is there relationship between having a high school education and knowledge of the orbit of the earth, which one is independent variable and which one is dependent variable?

Solution

There is relationship between having a high school education and knowledge of the orbit of the earth. While hving high school education is an independent variable, knowledge of the orbit of earth is dependent upon the former information. If one has high school education then only he can know about the orbit of the earth.