5
An experiment of any kind can have infinitely many variables. A controlled experiment can have just as many, provided that all but one are kept exactly the same.
Variables that do not change in an experiment are independent variables.
Variables that do not change in an experiment are independent variables.
one
1
As few as possible.
All variables except one, the experimental variable, are kept constant in an experiment.
the only variables in an experiment are the independent variables [the thing in an experiment your going to change. and the dependent variables [the thing in an experiment your going to measure.
There are three types of variables tested: manipulated variables, controlled variables, and experimental variables.
A experiment should only have one variable.
Most science experiments will have two independent variables. Fundamentally, an experiment will want as few variables as possible for better results.
one