Determine whether the study depicts an observational study or an experiment?

Fifty Patients with colon cancer are divided into two groups. One group receives an experimental drug to fight cancer, the other a placebo. after one year, the spread of the cancer is measured.

Is it observational or Experimental ?

Question

Determine whether the study depicts an observational study or an experiment?

Fifty Patients with colon cancer are divided into two groups. One group receives an experimental drug to fight cancer, the other a placebo. after one year, the spread of the cancer is measured. 

Is it observational or Experimental ?

anonymous · Answer

Experimental well there is no such definite boundary between experiment and observation because you observe from experiment and draw conclusion:)