Experiment Design Analysis - Studying

Allen wants to see if studying will improve his science grade. Each week he studies a little more and looks to see if his grade goes up for that week. Each week he tries to get enough sleep and doesn't eat strange foods. Work is going OK so he doesn't have that stress in his life.

  1. Question/Problem:
     
     
     
  2. Hypothesis with a prediction:
     
     
     
  3. Manipulated variable:
     
     
  4. Levels of treatments:
     
     
  5. Responding variable:
     
     
  6. Controlled variable:
     
     
  7. How would you improve this experiment?