Respuesta :
Answer and Explanation;
- The most important difference between an experiment and an observational study is the fact that; .In an observational study the researcher has no control over the variables while an experiment involves application of treatments to a group and recording the effects.
- In an observational study researchers observe subjects and measure variables of interest without assigning treatments to the subjects. The treatment that each subject receives is determined beyond the control of the investigator.
- In an experiment investigators apply treatments to experimental units (people, animals, plots of land, etc.) and then proceed to observe the effect of the treatments on the experimental units
Differences between an experiment and an observational study:-
Observational study and experiments are the two major types of study involved in research.
The way of observation is the main difference between the Observational study and experiment.
Observational Study:
→ In this type of study, we survey members without trying to affect them.
→ In observational study, the researcher simply makes an observation and arrives at a conclusion.
→ In this study no experiment is required.
→ This studies are less expensive than experimental studies.
→ The time duration for the completion of observational studies can be several years.
Experiments :
→ In this type of study, we randomly assign a treatment to a group so that the researchers can draw the cause and effect (causal) conclusion.
→ In an experiment, the researcher changes every aspect for deriving a conclusion.
→ This studies are closely monitored.
→ Experimental studies are costly.
→ The time duration for completion experiment is short or less than the observational studies.
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