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In a controlled experiment there is only one experimental variable because if you have more than one experimental variable 1) you wouldn't be able to know if your hypothesis is correct or not and 2) your answer wouldn't be accurate so you wouldnt know which made a difference in the experiment.
cw: In more advanced experiments, you may find many experimental groups. For more information, see any Statistical book on a set of procedures abbreviated ANOVA and MANOVA.
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∙ 9y ago
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∙ 10y agoScientists change only one variable in a controlled experiment because in a controlled experiment, scientists don't change a variable. It is the OTHER experiment that they change the variable in. Scientists change only one and keep the other one original because the purpose is to figure out which solution is better than the other. If they change both at the same time, then their conclusions would all be mixed up, and there would be no exact result. When scientists work, they look for the exact. If they can't find it the first time, they'd try again and again until they figure out the problem or solution.
So they know what change caused what result. If you change three things, for example, which one caused the change in the result?
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∙ 15y agoBecause then you can determine the effect of this variable on the thing you are studying. If there is more than one variable it becomes much more difficult to know what causes any observed changes.
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∙ 11y agobecause if they did multiple at once, if an important reaction is discovered, then they would have to do more experiments. by doing one at a time, they know for sure that the added or subracted factor is what caused the reaction.
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∙ 15y agoBecause if more than one variable is changed, you wouldn't know which one (or more) caused the difference between the groups (if any) and to what extent.
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∙ 15y agoThere can only be one variable or factor in an experiment because if you change more than one thing, you wont know what the answer is.
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∙ 12y agoit's important because it is easier to check
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∙ 11y agobecause im daddy and i say so....
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What does independent variables in science?
Hello, Well what you would be looking for is what an independent variable means. Assuming you understand what a variable is and a dependant variable is, here goes: An independant variable is the variable which you change in an experiment. Note you can only have 1 variable that can change in an experiment and more than one independent variable will result in an unfair experiment. An example is an experiment looking at the growth of trees in the Dark, in a dimly lit room and in the direct sun. The independant variable is the location of the experiment, because this is what is being changed. Simply: The Independent Variable is the variable that is independent and you change. The dependant variable is what changes when the independent variable changes. To conduct an experiment, you will have an independent variable and change that to see how the dependant variable changes with the independent one. Hope I Helped
How many variables should you have when you start an experiment?
An experiment involves three types of variable.The independent variable is the one you are investigating. It is the one which you deliberately vary in the experiment. You should only have one independent variable.The dependent variable is the variable which you measure to get your results. Often there is only a single dependent variable but there can be more.All other variables must be controlled ie kept constant so they do not change the result. There are usually many control variables in an experiment.
What variable is the part of the experiment that is affected by the independent variable that is being tested or the part that is changed by the person doing the experiment?
The variable of the experiment that is being tested or the part that is changed by the person doing the experiment is called the independent variable... Thank you for letting me answer goodbye... ;)
What is The thing you change in an experiment?
The chemical composition and physical state of substances can change during an experiment.For example two reactants in solid or liquid form can react in an experiment to give a product in a gaseous form.
What dose controlled experiment mean?
this is an experiment that only one varible is manipulated at a time
What is a variable that is change in an experiment?
The dependent variable is the variable that can change in an experiment.
When the chemist designs his experiment what should be the only independent variable?
temperature
What should have been the only independent variable in paola's experiment?
the zize of the glass
What should be the only independent variable?
In most real life cases, limiting an experiment to only one independent variable makes the whole experiment a waste of time. More often than not there are several independent variables.
What does independent variables in science?
Hello, Well what you would be looking for is what an independent variable means. Assuming you understand what a variable is and a dependant variable is, here goes: An independant variable is the variable which you change in an experiment. Note you can only have 1 variable that can change in an experiment and more than one independent variable will result in an unfair experiment. An example is an experiment looking at the growth of trees in the Dark, in a dimly lit room and in the direct sun. The independant variable is the location of the experiment, because this is what is being changed. Simply: The Independent Variable is the variable that is independent and you change. The dependant variable is what changes when the independent variable changes. To conduct an experiment, you will have an independent variable and change that to see how the dependant variable changes with the independent one. Hope I Helped
What variable is the only one that purposely changed to test a hypothesis in an experiment?
Independent variable : )
How many variables should a experiment have?
An experiment involves three types of variable.The independent variable is the one you are investigating. It is the one which you deliberately vary in the experiment. You should only have one independent variable.The dependent variable is the variable which you measure to get your results. Often there is only a single dependent variable but there can be more.All other variables must be controlled ie kept constant so they do not change the result. There are usually many control variables in an experiment.
How many variables should you have when you start an experiment?
An experiment involves three types of variable.The independent variable is the one you are investigating. It is the one which you deliberately vary in the experiment. You should only have one independent variable.The dependent variable is the variable which you measure to get your results. Often there is only a single dependent variable but there can be more.All other variables must be controlled ie kept constant so they do not change the result. There are usually many control variables in an experiment.
What variable is the part of the experiment that is affected by the independent variable that is being tested or the part that is changed by the person doing the experiment?
The variable of the experiment that is being tested or the part that is changed by the person doing the experiment is called the independent variable... Thank you for letting me answer goodbye... ;)
13 What is the relation between dependent and independent variables?
Independent variables are those that you change in an experiment. Dependent variables are the ones that you measure in an experiment. Dependent variables are influenced by the independent variables that you change, so they are dependent upon the independent variable. Generally, experiments should have only one independent variable.
What is The thing you change in an experiment?
The chemical composition and physical state of substances can change during an experiment.For example two reactants in solid or liquid form can react in an experiment to give a product in a gaseous form.
What dose controlled experiment mean?
this is an experiment that only one varible is manipulated at a time
