Homer thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers and assigns each group the same task ( in case, they’re supposed to staple a set of papers ). Groups A is given the special juice to drink while they work. Groups B is not given the special juice. After an hour Smithers counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks. Directions: for each of the following identity the: 1 . Control group-2 Experimental group-3 independent variable ( the thing that Smithers changes )- 4 Constants ( the things that Smithers leaves the same )-5. Dependent variable ( the thing that you observe/keep data on)-