Ms. Hughes studied her students' physics test scores and TV habits. She found that students who watched less TV tended to earn higher scores on the test. What conclusion should she make? There is no correlation between test score and amount of TV watched. There is a correlation between test score and amount of TV watched. There is probably also causation. This is because there is an increase in a student's test score with a decrease in the amount of TV watched. There is a correlation between test score and amount of TV watched. There may or may not be causation. Further studies would have to be done to determine this