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Why should you have only one variable and as many control as possible in an experiment?
Wiki User
∙ 12y ago
What a stupid question. Because you should.
Wiki User
∙ 12y ago
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What dose variable mean in science?
A variable is an element in an experiment that you control. There should only be one variable in an experiment or the results will not be accurate.
How many types of variable should be control in an experiment?
Ideally you control all variables except for the variable of interest.
A part of an experiment to which you can compare the results of other tests?
Control
What should you include in your experiment Scientific method?
You should include answer to your problem, 1 variable, and a control group.
True or false. the control subject of an experiment be exposed to all variables?
False. The control subject (Or control group) should be kept isolated from the variables of the experiment. This group will detemine if changing a variable is better or worse than not changing the variable.
In an experiment the group that is exposed to the variable to be tested is called the?
control group
What is a control variable in a science project?
It is the variables you will not change to keep the experiment a fair test, they should be kept constant to show how your independent variable affects your dependant variable.
What is the control in an expiriment?
The control is the subject in an experiment not introduced to the dependent variable. For instance if you were to test the effect of different types of fertilizer on plants, the control would be the plant with no fertilizer.
What is the differnce between a variable and control in an experiment?
the variable is allowed to change, the control must stay the same. If you are testing whether a bird whistles best in hot or cold temperatures, the type of bird should be the control.
When is an experimental variable good and when should it be reduced or eliminated?
There are generally 3 variable in an experiment : the dependent, independent and the control variable. The independent variable is something you change in your experiment and affects the dependent variable, while the control variable is there to make sure the experiment is a fair test. (eliminate external factors) A variable is considered good when it allows you to find a relationship or to investigate your theory. eg. A simple experiment : To investigate whether length of pendulum affects the period of a pendulum. IN this case, your independent variable would be the length of pendulum(to be changed) while your dependent variable is the time taken for 1 oscillation. You can plot x-y graphs to find the relationship between the two to help you conclude your experiment. ( Wind factor should be eliminated as it will affect your readings). There is no control variable for this experiment as period is dependent only on length and gravity.(unless gravitational force changes) There are times when a variable can be affected by many other factors. So in your experiment, you might want to eliminate those factor so that you can make a conclusion.
How many variable should be tested and isolated in a good experiment?
One. If there is only one variable being tested, when you compare it to the control, you know that was the cause of a change.
How many variables should have an experiment?
A experiment should only have one variable.
