Patients who visit a clinic for the first time are asked to answer 15 questions about their health history.
Survey
A researcher randomly chooses 20 patients who come to the clinic with the flu and gives them an experimental drug. A randomly chosen group of 20 patients who come in with the flu receive a placebo.
Experiment
A doctor at the clinic asks patients who come in with a headache how many hours of sleep they get on a typical night.
Observational Study
Answer:
A survey : survey sampling is the process of selecting a sample of elements from a target population to conduct any survey.
An experiment : an experiment is a procedure that can be infinitely repeated and can have many possible outcomes.
An observational study - observational studies are done to understand cause and effect relationships.
Survey - Patients who visit a clinic for the first time are asked to answer 15 questions about their health history.
Experiment - A researcher randomly chooses 20 patients who come to the clinic with the flu and gives them an experimental drug. A randomly chosen group of 20 patients who come in with the flu receive a placebo.
Observational Study - A doctor at the clinic asks patients who come in with a headache how many hours of sleep they get on a typical night.
