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Why is it important for a scientist to use controlled experiments where only one factor is changed and the rest remain constant?
Wiki User
∙ 13y ago
Because the goal of an experiment is to figure out the cause and effect of something on something else. Without a control variable(s), any number of causes could produce the observed effect, making it very difficult to determine exactly which cause produced the observed effect.
Wiki User
∙ 16y ago
Wiki User
∙ 15y agoSo that you can have added confidence that the difference you see in outcomes is the result of the one variable you change. There are complex experimental models where you can change several variables, but they involve a great deal more preparation and are not often used.
Wiki User
∙ 13y agolife is like a box of chocolate you'll never know what your ever gonna get. always
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What is an controlled experiment?
A controlled experiment can be used to test almost anything. In a controlled experiment, the scientist (or experimenter) use a control group and an experimental group. The control group has nothing changed about it, and experiment group is changed based on the variable of the experiment. One of the most common uses of controlled experiments is the testing of new medications. In a medical study, a pharmaceutical company usually brings in a group of 100 people. Those people people are randomly assigned to two groups of 50. The experiment group is given the medication being tested, and the control group is given a placebo (a sugar pill). After several weeks, the experimenter can then see the side-effects of the medication, by comparing the differences between the experiment and control groups.
Why is constant weight important?
Yes a constant weight would be important to maintain or gain muscle mass. Constant weight fluctuations are not a good thing, a pound wont matter
How is a constant and an independent variable similar?
An independent variable or manipulated variable is when you change it on purpose. For example, say your scientific problem was "Does certain substances affect how fast water is frozen?" Those substances are the indepentant variables. A dependant variable is how you measure the dependant variable. For instance, the dependant variable would be how fast the water is frozen. The things they have in common are that they are both variables and are subject to change.
An experiment that changes while all the others remain constant?
It is called a CONTROLLED EXPERIMENT. Thanks person :D this is the rite answer people listen to this person! how do you give pointy thingys u know like the little points or what ever? well any whoo thank ya
What is a constant in scientific method?
You all ask what is a constant? Well, a constant is something that you don't change in your experiment, and it's also referred to as a controlled variable. - Artsy Vandyke (That's really my name <3)
What controlled variables in science?
The number of dependent variables in an experiment varies, but there is often more than one. experiments also have controlled variables are quantities that a scientist wants to remain constant, and he must be observe them as carefully as the dependent variables.
Why is it important to use constant in an experiments?
so scientists can compare result
What is the controlling variables?
Controlled variables are quantities that a scientist wants to remain constant and observe as carefully as the dependent variables.
What is costant and control?
Controlled variables are quantities that a scientist wants to remain constant and observe as carefully as the dependent variables.
Why is it important to have a controlled experiment where everything is constant except the component you are testing?
Meh... just wing it.
When a scientific experiments is carried out in a controlled setting all variables are kept the same except for the variable?
When a scientific experiment is carried out in a controlled setting, all variables are kept the same except for the control variable. The control variable is something that is constant and unchanged in an experiment, and is held constant to test the relative impact of independent variables.
What do all good experiments have in common?
A constant.
In an experiment what are controlled variables?
Controlled variables are quantities that must remain constant.
What does 'constant' means for the experimentS?
The constant is the value that stays the same throughout your experiment, whereas the variable value changes.
What is another word for a factor that is kept the same in scientific experiments?
A "constant"
What is the Synonym for controlled variable?
constant variable
Why is it important to have a constant in an experiment?
In order for the results to be valid, the dependent variable can only be affected by the independent variable, so somethings need to be kept CONSTANT. The things that need to be kept constant are called CONTROLLED VARIABLES. Even if controlled variables are affecting the dependent variable(s), which they usually do, keeping them constant will ensure that all trials of an investigation were equally impacted by the controlled variables, therefore allowing one to see the impact of an independent variable on the dependent variable. All in all, a 'constant' in a science experiment should actually be called a 'controlled variable' and the description of such a variable is described in the third point. Hope this clarifies.
