scientific method

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Across
  1. 4. a group that receives a treatment
  2. 6. or changes
  3. 7. the evaluation of work by one or
  4. 9. a supposition
  5. 12. a matter or situation
Down
  1. 1. experiment
  2. 2. a group separated from the rest of
  3. 3. the variable that is being measured
  4. 5. an experitment
  5. 8. the variable the experimenter
  6. 10. tested in an experiment
  7. 11. people with similar competencies