EARTH SCIENCE
MAGNETISM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
A controlled experiment is one in which ____ variable(s) is/are being tested.
|
|
1
|
|
|
2
|
|
|
3
|
|
|
multiple
|
Explanation:
Detailed explanation-1: -In experiments, researchers manipulate independent variables to test their effects on dependent variables. In a controlled experiment, all variables other than the independent variable are controlled or held constant so they don’t influence the dependent variable.
Detailed explanation-2: -A controlled experiment requires at least two variables: a manipulated variable and a response variable.
Detailed explanation-3: -Yes, an experiment should test only one variable at a time. This ensures that the experimental outcome is clearly due to one identifiable factor.
There is 1 question to complete.