Answer:
changes
Explanation:
Experimenters or researchers does research that is based on two approaches to find his or her results of their hypothesis. One is the experimental research and the other is correlational research.
In the experimental research approach, the researcher can take control of the variables to alter or change the findings whereas a correlational research approach does not allow to control the variables and involves in looking the data which already exists. A correlation looks for the relationship between the variables.
