Lesson 9: Research Variables
The research variables, of any scientific experiment or research process, are factors that can be manipulated and measured.
Any factor that can take on different values is a scientific variable and influences the outcome of experimental research.
Gender, color and country are all perfectly acceptable variables, because they are inherently changeable.
Most scientific experiments measure quantifiable factors, such as time or weight, but this is not essential for a component to be classed as a variable.