Collecting and Interpreting Data Question
View this question.
Add this question to a group or test by clicking the appropriate button below.
Under what conditions would it be necessary to conduct an observational study?
- When there aren't any willing volunteers to participate in the study
- When the treatments aren't effective in a laboratory
- When the subjects can't be randomly selected
- When it is unethical to impose a treatment in order to measure a response on subjects
- When the research is not sufficiently funded