INTRODUCTION
RESEARCH AND SCIENTIFIC METHODS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Three
|
|
|
Zero
|
|
|
Two
|
|
|
One
|
Detailed explanation-1: -Yes, an experiment should test only one variable at a time. This ensures that the experimental outcome is clearly due to one identifiable factor.
Detailed explanation-2: -Answer and Explanation: You can have as many independent variables in an experiment, as you want, but you would like to design your experiments to have only one independent variable if it is possible. This is because it allows you to determine whether your independent variable influences your dependent variable.
Detailed explanation-3: -An experimenter should only manipulate one variable. There should only be one thing that differs between the different setups.
Detailed explanation-4: -Every experiment has at least two variables-an independent variable and a dependent variable. The independent variable is what you are testing, and the dependent variable is the result. Any other variables in your experiment build on or affect the independent or dependent variables.