What is the factor scientist change in a controlled experiment?
The independent factor.
The factor changed is the independant varible, the thing that the scientist can change each time they run the experiment. The control is the part of the experiment that the scientist determines stays the same. Ex. They have one person eat a milk chocolate and a dark chocolate and then ask which one they like. The person is the control because it stays the same. The chocolate is the independant varible because the type changes.
Environmental factors if you cannot control them. Variable factors if you can control them. See link below for easy explanation: In an experiment the scientist is able to change the independent variable. To insure a fair test, a good experiment has only one independent variable. As the scientist changes the independent variable, he or she observes what happens. - See more at: http://www.chacha.com/question/what-part-of-an-experiment-is-the-factor-that-you-change#sthash.iyH25Jac.dpuf In an experiment the scientist is able to change the independent variable…