a) I hypothesize that Tide will take out grass stains
b) Independent variable: thing that we are changing
The independent variable is the type of detergent
c) Dependent variable: thing that we are measuring
The dependent variable is how well tide will take.
out grass stains compared to other detergents
d) Control variable: another test that will stay the same
so we can compare it to the experiment
The control variable is another type of detergent