Answer:
Controlled variable, <u>if you're talking about scientific variables in experiments.</u> (if not, you can just ignore this.)
Explanation:
Main types of variables are: Independent, Dependent, and controlled.
Independent variable is what is being changed in each experiment by the scientist.
Dependent variable is the change in result of the independent variable.
Controlled variable is other factors that have to remain constant in order for the experiment to remain valid.
For example:
Joshua wants to know how the location of a plant affects it's growth rate. He sets up 3 same plants in different locations in his classroom, and records how much they grow by after a month.
Plant A: On a desk in the middle of the room
Plant B: on a windowsill
Plant C: in a closet
The results are as follows:
Plant A grew by 1.3 inches
Plant B grew by 2 inches
Plant C grew by .5 inches
The independent variable in this experiment is the location in the room. The dependent variable is the growth rate.
The controlled variable is everything else: the type of plant, the type of soil, etc.
hope this helped!
