Variables

Different types of variables

I learnt about the different types of variables. They are the independent variable, dependent variable and controlled variable.
1) The independent variable is the one whose values is the one chosen by the experimenter. In other words, it is the variable that is modified.
2) The dependent variable is the value you observe and record in an experiment and it depends on the behaviour of the participant.
3) The constant variable is the factors that scientists keeps constant.