Question

more experimental design practice
a stapler is used to staple 100 papers, it jams 5 times during the trial. a different brand of stapler performs the same test; it jams 22 times.
the independent variable is
the dependent variable is

Explanation:

The independent variable is the factor changed to test its effect, which is the stapler brand here. The dependent variable is the measured outcome affected by the independent variable, which is the number of jams.

Answer:

The independent variable is stapler brand.
The dependent variable is number of jams.