Experiment Design Analysis - Manure II

The next year Farmer Fred, decides to divide his field into four areas. The areas are of equal size. He spreads the same amount of manure on each area, but on one area he doesn't put any manure. In the fall, Farmer Fred measures how many bushels of oats he harvested, but he doesn't taste test the oatmeal.

  1. Question/Problem:
     
     
     
  2. Hypothesis with a prediction:
     
     
     
  3. Manipulated variable:
     
     
  4. Levels of treatments:
     
     
  5. Responding variable:
     
     
  6. Controlled variable:
     
     
  7. Is this quantitative or qualitative data ?
     
  8. How would you improve this experiment?
     
     
     
     
  9. Why did farmer Fred add the area with no manure ?