Independent Versus Dependent Variables
Suppose I would like to investigate the relationship between the number of hours that a student studies for a statistics exam and the grade for that exam (uh-oh). The following table shows sample data from six students whom I randomly chose.
Data for Statistics Exam
The independent variable (x) causes variation in the dependent variable (y).
Exercise caution when deciding which variable is independent and which is dependent. Examine the relationship from both directions ...