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Generally scientific experiments investigate the relationships between an independent variable and one or several dependent variables.
Independent variables are regulated parameters and the outcome of the experiments do not affect these variables.
The dependent variables are those variables which have some sort of relationship with the independent variable and it is the investigators task to determine the nature of this relationship.
Any single scientific investigation must regulate only a single independent variable with all other independent variables held constant. This is done so that the investigator can correctly attribute an outcome as being due to the regulation of a single variable. For example, suppose you started watering your potted plants with a saline solution and you also began exposing them to very intense light. If you saw that the plant leaves changed colors you would not know which variable had the greater affect on this color change. Did both variables even affect the leaf or was it due to just one variable? which one? You would have to split the investigation into two investigations, each with a single independent variable.
Wiki User
∙ 8y ago
Wiki User
∙ 14y agoThe controlled variables are the things that remain the same in an experiement. I'm only 11!!! thanks for that smart arsed kid, but i wanted a better answer.
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Why are placebos used in experiments?
To make it a fair test.
Why is it important to have a fair test in chemistry?
Fair should definitely not be part of science fair.
The one variable that is purposely changed to test a hypothesis is?
manipulated variable!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
List three things that you can control and or measure in this experiment in chemistry lab?
There are more than three possible controls for any experiment, as a control is just a variable that something is being tested against and compared to. Three would include temperature, color, or weight - all things that may be easily controlled among a group of test subjects.
What Is the factor that changes in an experiment in order to test the hypothesis?
variable
What is a controlled variable in a science fair 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 type of experiment is it when one variable is changed while the other variables are controlled?
its called a fair test. :)
What is the variable that changes in response to the expirementation?
In a scientific experiment, there are three variables: -The independent variable, what is changed -The dependent variabls/s, what changes in response to the changing of the independent variable (what you are talking about here) -The controlled variable/s, what you need to ensure remain the same throughout al of the trials in order to make it a fair test.
What is fair test?
A fair test is when you test something equally changing the variables but keeping everything else the same
What is the one variable that can change to test a hypothesis?
controlled definition
A controlled experiment is designed to test a single factor called a?
Variable
What is a controlled varable?
Controlled (or control) variables are things that are kept the same during an experiment. There are usually many- for example, when testing how light intensity affects photosynthesis, the controlled variable would be the type of plant used, or the color of the light.
What makes a good experiment versus a bad experiment?
A good experiment needs to be a fair test so to have a fair test you need to have a independent variable, a dependent variable and a controlled variable. Independent Variable: The thing you change Dependent Variable: The thing you measure Controlled Variables (there's usually more than one): The things you keep the same. For example if I have 3 kids and I want to find out who can open presents the quickest the independent variable: would be what kid is opening the presents the dependent variable: would be how quick the kids were so their time and the controlled variables: would be the size of the present they used and the wrapping paper on it. Also a experiment should be repeated twice for the best results and then averaged. A bad experiment wouldn't be a test for example changing what should be a controlled variable so if one kid had to open a bigger present than the other kid they would take longer than they would with the same size present so you wouldn't get good results.
What is an experiment in which only one variable changes?
It's called a 'fair test'
Which variable is the one variable that is purposley changed to test a hypothesis?
The independent variable is the one that is purposely changed to test a hypothesis.There are 3 kinds of variables in a scientific experiment: independent, dependent, and controlled.
What is a cotrolled experiment?
It means that except for the independent variable (the only factor that you change) you remain the other variables constant. To keep the control variables the same. Then this is a controlled experiment (fair test). Hope this helps :)
A sentence with hypothesis and control?
If you want to test your hypothesis with a controlled experiment, you should make sure you have only one variable.
