Solution
Answer choice
There are many different types of response scales; multiple-choice options are common, but Likert scales are used quite often as well.
Six options:
Strongly Agree.
Agree.
Somewhat Agree.
Somewhat Disagree.
Disagree.
Strongly Disagree.
Sample survey
A sample survey is a method for collecting data from or about the members of a population so that inferences about the entire population can be obtained from a subset, or sample, of the population members.
Observational study
In this type of study, we measure or survey members of a sample without trying to affect the members or manipulating the variables. Here, we simply observe what is happening and record the observations. So, it would be correct to say that researchers do not impose any kind of treatment or restriction to the group nor do they randomly assign the subjects to a group. There is basically no manipulation of the environment in which the subject occurs.
Experiment
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. This random assignment of treatments is what distinguishes both the studies (observational and experimental). Here, we experiment and manipulate the environment of the subject to measure the response (dependent) variable. Evidence provided by the experimental study is considered to be stronger than the observational study.
The final answer
Observational study
