The main difference between a correlational study and an experiment is that in a correlational study:
A) samples have to be representative.
B) no hypothesis is required.
C) the investigator does not intentionally manipulate any variable.
D) there is a dependent variable but no independent variable.

Question

Quizplus · Accepted Answer

In a correlational study, the investigator measures the relationship between two variables without manipulating any variables intentionally. In contrast, an experiment has a defined independent variable that is manipulated and a dependent variable that is measured. Therefore, choice C is correct. Choices A and B are incorrect because both a representative sample and a hypothesis can be used in both correlational studies and experiments. Choice D is incorrect because both experiments and correlational studies have both independent and dependent variables.

The Main Difference Between a Correlational Study and an Experiment