Answer 1:
a variable whose value depends on that of another
Example 1:
In a study to determine whether how long a student sleeps affects test scores, the independent variable is the length of time spent sleeping while the dependent variable is the test score.
Answer 2:
a variable whose variation does not depend on that of another.
Example 2:
The dependent variable is the variable that is being measured or tested in an experiment. For example, in a study looking at how tutoring impacts test scores, the dependent variable would be the participants' test scores, since that is what is being measured.
