A controlled experiment is one in which only one variable is changed at a time. A variable is something which can vary, or have different values. Scientific investigations always involve three types of variables: 1) The independent variable: this is the variable which you deliberately alter, so you will know its values before you start the experiment. For example, if you want to know how the amount of light a plant gets affects its growth, you must give aome plants different amounts of light. Since you need to choose the amounts, you will know the values of this variable before you start the experiment. 2) The dependentvariable:this is the variable you must measure to find out if it changes as a result of you changing the independent variable. Since you have to measure it to find out its values, you will not know the values (ie the results) before doing the experiment. In the plant example you wouls have to find some way of measuring plant growth in the different light conditions. 3) Controlvariables: these are any other variables which may affect the values of your dependent variable, so they need to be kept constant to make it a fair test. In our example, things like the temperature or the amount of water could also alter plant growth, so they would have to be kept constant. These variables are also called confounding variables. The basic principle is only alter one variable (the independent variable) at a time; keep everything else the same. See: http://www.sciencebuddies.org/science-fair-projects/project_experiment_fair_test.shtml http://www.fair.science-resources.org/sci_meth.htm
The control group is the begining stage of an experiment. Before anything (experimental) is added. Example is Women and couseling. One group gets basic couseling is sent home while the experimental group gets couseling and twenty minutes of exercise. The Control group is the group nothing has changed with, basic couseling group.
A controlled experiment is one in which only one variable is changed at a time. A variable is something which can vary, or have different values. Scientific investigations always involve three types of variables: 1) The independent variable: this is the variable which you deliberately alter, so you will know its values before you start the experiment. For example, if you want to know how the amount of light a plant gets affects its growth, you must give aome plants different amounts of light. Since you need to choose the amounts, you will know the values of this variable before you start the experiment. 2) The dependentvariable:this is the variable you must measure to find out if it changes as a result of you changing the independent variable. Since you have to measure it to find out its values, you will not know the values (ie the results) before doing the experiment. In the plant example you wouls have to find some way of measuring plant growth in the different light conditions. 3) Controlvariables: these are any other variables which may affect the values of your dependent variable, so they need to be kept constant to make it a fair test. In our example, things like the temperature or the amount of water could also alter plant growth, so they would have to be kept constant. These variables are also called confounding variables. The basic principle is only alter one variable (the independent variable) at a time; keep everything else the same. See: http://www.sciencebuddies.org/science-fair-projects/project_experiment_fair_test.shtml http://www.fair.science-resources.org/sci_meth.htm
It is an experiment testing only ONE factor at a time. It's a test of the effect of a single variable by changing it while keeping all other variables the same, where every variable is planned and you have a hypothesis of what the outcome should be.
an experiment that can be controlled by someone
or
the answer is a experiment that is controlled
to gather data from data to create an controlled experiment
This called an controlled scientific experiment.
The Variable is the one factor that differs in a 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.
controlled experiment
experiment
the answer is a experiment that is controlled
It is called a controlled experiment.
A controlled experiment is better than a none controlled experiment because you can control one of them and the other you can't. Science is a really fun subject.
An investigation in science that is controlled is an experiment. The group within the experiment that is controlled is the control group.
a controlled group is like an idea but an experiment that is controlled cannot be changed.
A controlled experiment is an experiment where there are limited or no variables other than the one you are testing for.
An investigation in science that is controlled is an experiment. The group within the experiment that is controlled is the control group.
the new drug has been developed. Through many controlled studies and researches.
a controlled experiment is an experiment that has an iv, dv, and a control, is in a well handled environment, and the experiment is safely done.
a controlled experiment